I had a chance to play a bit with some Android phones during the weekend. One of the things I found a bit hard to get used to was the keyboard. Not that it's bad, it's actually not bad, but when you are used to the iPhone keyboard, it's mostly likely that you will find anything else harder to get used to.
But hey, there's a solution for that!
If you will perform a search in the marketplace for "iPhone Keyboard" you will find a very nice and free iPhone keyboard that looks exactly like the original and works nicely as well!
Try it out. You may like it.