Pros
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- 64 bit processor and 4GB of ram, better than many of the other cheap Windows Tablets and Convertibles
- Functions as either a Windows Tablet or a laptop
- Includes a nice keyboard dock for this price range
- Has a large multi-touch trackpad that includes gesture support
- Has an easily accessible hard drive expansion bay
- Dual-band Wi-Fi
- Micro HDMI port
- USB 3.0 Port
- An actual LAN port!
- Long battery life (Amazon says 8.5hrs, B&H says 10.4 hours!)
- Offers a greater value over iPads and Android tablets, depending on how you plan to use it
- Nice Asus extras such as cloud storage and Accidental Damage Protection

Cons
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- Bulky for a tablet, heavy for an 11 inch laptop
- Not the greatest screen resolution (1366x768)
- Large bezel around the screen
- Power button, Windows Button, and volume buttons are on the back of the tablet
- No 3G/4G support on this model
- To active stylus support
- Only 39GB of its 64GB is available (before I applied any software updates)
- Microsoft Office not included for free, unlike other models
- No extra battery in the dock.
- A conventional laptop at the same price will often have better specs, features, and performance

Other Thoughts
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- I wish it had AC wireless
- Would have been cool if the HDD bay could double as an extra battery bay
- When docked, the range of motion of the tablet is not as great as a conventional laptop
- The rumored $399 model is not yet available, as of this writing
- While setting up the T200 the first time, the screen stopped responding.It eventually fixed itself.I assume some initial background process locked the T200 down for a moment.This hasn’t happened again after that one time.

Asus T200 vs Microsoft Surface Pro 3
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The Microsoft Surface Pro 3 display is bigger and better looking than the T200, and has a much higher resolution.The SP3 is thinner.The SP3 is much faster.The SP3 also provides stylus pen support while the T200 doesn’t.The SP3 is definitely a higher end device compared to the T200.

The Microsoft Surface Pro 3 is also much more expensive than the T200.I also much prefer the typing experience on the T200 vs the Surface Pro 3.The Surface’s Type Cover, while pretty nifty, is not as good as a conventional keyboard.I really wish Microsoft would release a compatible keyboard dock.

If you can spend the money, get the Surface Pro 3.Otherwise, the T200 is not a bad alternative, assuming you don’t need an Intel Core CPU.

Asus T200 vs 8 inch Tablets
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The 8 inch tablets are best for media consumption, social media, and light tablet gaming.The Asus T200 can do all of that, AND serve as a better productivity device.Get an 8 inch tablet for play or get the T200 for work and play.Of note, I own both types of devices.

Asus T200 vs Asus T100
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The T200 has a bigger screen of course, measuring at 11.6 inches compared to the T100’s 10.1 inches.Since the T200 is a bigger device, its keyboard is bigger and closer to that of a full size keyboard.The T100 keyboard is adequate but definitely cramped.The T200 also has a larger trackpad and palm rest vs the T100.

The T100 is lighter and more portable than the T200, especially when in use as a tablet.The T100 gets 11 hours of battery life compared to 8.5 on the T200.The T100 comes with a free copy of Microsoft Office while the T200 does not.Depending on what configuration you choose, the T100 can be had for a cheaper price vs the T200.

I personally prefer the Asus T200 over the Asus T100 due to the bigger screen and better keyboard.However, those that want a better tablet experience, cheaper device (especially on older models), or a free copy of Microsoft Office should consider the T100 instead.

Conclusion
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For Windows Tablets and Convertible Laptops in the $300-$500 range, the ASUS Transformer Book T200 is definitely my favorite choice at the moment.It offers a tremendous amount of value with its ability to operate as either a Windows Tablet or laptop.
The thing I like most about the T200 is the keyboard.I think ALL Windows Tablets require a good keyboard dock and the T200 has a pretty good one.I can comfortably and accurately use this keyboard to get work done.I’m actually typing up this review on my T200.

Just keep in mind that the T200 is not a powerhouse.It’s not a good option for those interested in playing 3D games, editing video, or other activities that require more processing and graphics power.

Also, the $499 model I own loses a bit on its value proposition when compared to the rumored $399 Asus T200, which was not available at the time I wrote this review.

I’ll update this review after I use the T200 a while more.I may post a video as well.

I purchased the T200TA-C1 2 in 1 simply because I wanted a Windows tablet to play with and I wanted something with a screen a bit larger than my wife's T100TA (10.1 inch screen).While there are larger screen 2 in 1 units, they are somewhat bulky and I feel this size screen works best for me.

Rather than re-state that which has been said in some of the previous reviews, I'd like to point out some of the features that I believe set the ASUS T200TA-C1 apart from many of the other sub-$500 2 in 1s.First, I would like to note that some of the "cons" listed here in other reviews are "cons" for most, if not all, of the sub-$500 units: RAM size (in this case 4 GB) that is not upgrade-able, internal storage (64 GB) that is not upgrade-able, and others, so I won't re-hash them either.

The obvious:

The larger screen size also allows for a larger keyboard module.It can not be overstated that the close to full sized keyboard is simply easier to adjust to.

Separate charging port.You are not using one of the USB ports for charging and will not have to disconnect something from that port while charging.

The Hard Drive bay in the keyboard dock allows you to increase the internal storage to "up to 1 TB" according to ASUS.It is unknown whether the limit of 1 TB is simply because that is the largest (physical size, 7mm) that currently fits the bay. Also, you can put a SSD in this bay.

It has one USB 3.0 port. If one has a USB 3.0 peripheral, such as a Blu-ray/DVD drive, they may appreciate this faster speed port.

Not quite so obvious:

There is an actual RJ-45 LAN port (Ethernet) on the keyboard dock.While for some this is an almost meaningless specification, for those with some technical expertise, this could be a deal-breaker requirement.Example: by being connected by wire to a wireless router one can configure the router.

The micro SD card slot allows the inserted card to fit flush with the tablet.It does not stick out at all.Increasing the internal memory of the T200TA is as simple as inserting a micro SD card.ASUS Tech says it will take up to a 64 GB card.Perhaps this is the largest capacity card they have tested and it can handle larger cards?Hopefully an owner will test a larger capacity card and let us know.

Some reviews note that there is a "bezel" or "frame" around the screen, meaning the displayed screen doesn't go all the way to the edge of the screen module, which makes the tablet portion larger than perhaps necessary..I find this to be a "pro" simply because almost always when I've used a screen where the touch portion extends to the edge, I've touched the active part of the screen and selected something I didn't mean to.With this screen that is not a problem.

The wireless adapter is Miracast capable.If you don't have a Miracast enabled HDTV or a Miracast adapter for your HDTV than being able to mirror your T200TA screen on your HDTV wirelessly is probably not important to you, but for those who do, it is handy.On the other hand, the T200TA does have a micro HDMI port which, with the proper cable (not supplied), will also allow you to show your screen on an HDTV screen.

We note that the screen is "only" 1366 x 768, commonly referred to as "HD" while "Full HD" would be a 1920 x 1080 screen. Again, some may find this to be limiting factor but I find the screen at 1366 x 768 doesn't make some of the text too small and is just about right for this screen. Personal preference here, but I have run some videos on this unit and they look just fine.

This T200TA with 64 GB ram is about $150 more than the current T100TA with 64 GB RAM. For that extra $150 you get a larger screen, larger keyboard, a dock for either an HD or an SSD, separate charging port, Microsoft Windows 8.1 64 bit (which is somewhat more secure than Windows 8.1 32 bit), an extra 2 GB RAM (which can be used by the 64 bit operating system), and slightly better graphics (Intel HD Graphic), and a LAN port.On the other hand, you do not get Microsoft Office.I am using the free KingSoft Office which meets my needs, so this wasn't an issue for me, although it could be a deal-breaker for some.

Edit to add (to save folks from reading the comments to this review):Also included in that $150 is a slightly better front-facing "webcam" - 2MP (T100TA has 1.2MP webcam) and an additional 5MP rear-facing camera. (Thanks to Amazon member "Pen Name" for reminding me.) Also, on this date (11/16/14,) Amazon has the 64GB T200TA for $120 more than the 64GB T100TA rather than the $150 we've noted.

Overall, at this price point, the T200TA-C1 appears to be a quality unit with what seems to be a sturdy assembly that locks the tablet and keyboard together.It will meet one's needs if they are an average Web surfer, video/youtube viewer, e mailer, light office user, or other similar non-power demanding PC uses who wants to run Windows 8.1 in both a tablet and notebook form.

Additional Edit: I bought and recommend the IVSO ASUS Transformer Book T200TA High Quality Leather Keyboard Portfolio Stand Cover Case-Will only fit ASUS Transformer Book T200TA Tablet (Black) and it fits nicely but has one minor problem.See my Amazon review for details.