I have the iPad1, 16G 3G with iOS 5.1 (upgraded yesterday) and love it...but I'd like to be able to use the new iPhoto app which won't work on it. If I had the iPad2 I don't think I'd be looking to upgrade. I also want 32G, as I'm sometimes pushing the limit on capacity, though I can usually delete photos and old video stuff I didn't realize was still there to free up space.
Now my biggest decision is whether to buy a used iPad2 32G 3g or spring for the new one with 4G LTE, and in either case, Verizon or AT&T. I have not been thrilled with AT&T's overseas coverage/reception; don't know if VZ is any better. Domestic has been OK, and I like being able to use it instead of paying the high WiFi rates at hotels. (Side note: why is it that the more expensive the hotel, here or abroad, the less likely it is to offer free WiFi? That's what I've found, anyway!) I believe VZ's 3G and 4G are dual band CDMA and GSM.
I'm also waiting for the next iPhone (it will be my first) and hoping I can get it before leaving for Europe 10/9...not holding my breath, though.