After several weeks of working with the 211, I must say that I am very happy and made the right choice. I really liked the Axim x51v, but on almost every front, I have found the 211 to be better.
The cons:
* The well documented screen sensitivity - but as also already noted I have gotten used to it.
* I liked that I could turn on the Axim with any key - not just power-on. That not only saved a key press, but also meant that I could always be sure that I could turn on the unit if for some reason the power-on button ever broke. You can only turn on the 211 with the power-on button. In general, the Axim had a better "Power" control panel than the 211 does.
* Along with that, I like the screen-lock button provided on the side of the Axim. Not as big a problem on the 211 (since as above only the power-on button turns on the device and it is pretty unlikely that it would get pressed while in your pocket, etc.)
* One of the buttons (the "Start" button) cannot be remapped at all. The other one (the "ok" button) can be remapped with the use of something like Spb PocketPlus (which I use). Plus, there is one less button on the side that can be used.
* The D-pad is harder to use if you want to page up. It takes some getting used to.
* The "backlight" widget that come with PocketPlus (and even the one that ships with the 211 itself) don't adjust the backlight that well.
* There aren't as many hardware accessories yet - and no decent cradle!
* It is bigger than the Axim, but not so much so that it is a big disadvantage. The Axim was already much bigger than my Palm so I got used to the larger size already anyway.
* If I believe the forums, no planned ROM updates. This thing better be pretty solid or that could become a problem! It also does not look like it is possible to get into the bootloader to install cooked ROMs either. You're stuck with the ROM you've got.
That's really about all I can say that is negative. And none of it is significant enough to out weigh the fantastic advantages.
The pros:
* An awesome screen! Better than the Axim's - and that's hard to believe. The extra screen real estate really makes a difference - as well as the improved screen brightness, etc. I also really like the auto adjusting backlight!
* Much better performance on everything except TCPMP (but I don't want movies so that is not a big deal for me). My Axim was cooked with the latest WM 6.1 image (an even newer build that what is on the 211); which made it faster than the stock WM5 image it shipped with But, the Axim just did not respond as well as the 211 does.
* More memory - which really helps the performance of the device.
* Battery performance is much improved over the Axim. I had an extended battery in my Axim and it does not last near as long as the standard battery that ships with the 211. And, I find that the 211 charges faster (but not over USB as also already noted by other reviewers). I also only am using a 2GB SD card in my 211 - after reading about the CF drain issue. I don't need more than that anyway. (Note that the early Axims had a similar CF power drain problem which also caused issues with power-on of the device. It was corrected with a ROM update.)
* Wi-Fi is faster and I have found it to be more reliable (less drops, etc.). Networking performance and reliability in general appears to be superior to the Axim.
* I like the iPAQ Data Store feature of being present over hard resets.
* I personally like the appearance of the device over that of the Axim.
It may look like I have more negative than positive. But, the negatives are mostly nits, while the positives are significant and make the day-to-day usage of the 211 much better than what I found with the Axim.
I was almost swayed away from getting a 211 from some of the negative posts I've seen. (I was just going to get a replacement Axim off eBay.) But, I'm very glad I went ahead and got the 211. So far, I am quite pleased and would recommend it highly. I hope it lasts and gives the same kind of quality service that the Axim did (until I dumped it in the toilet!

BTW, it eventually dried out and it is working again perfectly except for the fact that I can't recharge the battery in the unit. Amazing, really! That's pretty good quality!)
-- Dave