Iphone 3gs!!!!!!!!!!!!
I don't use my iphone for any bussiness purpose since I'm 19yo LOL So I hope an expert will chime in
I have one and I woudn't change it for anything!!!!
+ you don't need to have your crackberry in one pocket and your ipod in the other
If I were you I'll wait a little since apple it's going to release the new iphone in a few months