overall w580 design better and cheaper lo...but keypad crack like hell...$ e( |+ v8 }/ s/ R* }7 A" h# G
w910 more expensive...but the price will drop soon...
They both shittvb now,tvbnow,bttvb h& A) [1 J/ I6 M
i have the W910i, its system is too slow respond... 2 m. p( s. s) q9 _2 W3 [also the battery can not be used long...4 J: X! l0 o; c4 E% {& j