I was today at the 3 store and was looking at some phones but couldn't decide :/

There they offer following SE Phones:
K770i, K850i, W910, SEM W660i, SEM 880i, T650i, K530i, P1, K810i.

Which one would you choose/prefer and why? Pros/Cons?

Seems like i'm choosing between K850i or W910