I had the 910....the buttons were not soft rubber cells like the 990, but still 9 or 10 keys accross. It will take a little getting used to. I really started to get good in the graffiti area, it became faster than trying to type it only to backspace a few keys because some of the text never took (I didn't press hard enough a few strokes back)
at least on the 910 when you took the keypad off you had twice screen, not with the 990. Plus the jog dial was a 5-way, meaning you could pull it foward or press it back. The 990 is a 3-way only I heard. I still would have gotten it until I found out it's not 3G here in the states, only in Europe. (bummer) I ended with the HTC Tytn...(Cingular 8525 cousin with video conferencing)
I have just recently decided to buy the P990i, but i have one more question before I choose to land $500. Looking at the review, it seemed like the QWERTY keyboard was REALLY small, but the Editors thought that was still easy to press. And the thing about the keyboard being small wasn't even mentioned on the Cons list. What is up with that? So tell me this: is the keyboard easy to press? Or is it another thing Sony Ericsson is caught up for - lack of space?