I haven't place the order yet. I plan to go with ATT NEXT. Since it seems that apple store also has ATT NEXT option. Shall I order on apple store or on ATT website? any difference? or advise? Also 16G or 64G? would 16G too small? I'm not a heavy user, and rarely have large files stored on phone. Usually the largest space is occupied by photos. But I heard that the new update of iOS 8 consumes large space while upgrading. Would there be any concern for system space in the future? Thank you!