ok i know i already asked a few questions in another thread but iv been looking at the Avic-f90bt f900bt avic-z3 and also the DNX8120 can somone tell me what the difference is between the 90bt and the 900bt and also what the z3 and the dnx8120 has over them also how the 8120 is better then the 7120.

im really only gonna use the unit for the navi, BT, my ipod touch and for movies off my ipod touch and movies from a disk no system not really looking for sound quality out of the units which one would be the best for this from what i have looked at the 8120 is sweet can you customize the wallpaper on the unit i know all of them you can on boot up but when your just on the main screen?

i really dont like how the f- series has just the navi, BT and ipod icons on the main screen(but i guess looks isent everything) and can somone post up some pics of the z3 i cant seems to find any of the interface like the main menu and youtube dosent even have any vidoes on them i only seen the navi.

and can you guys tell me what each of these units have over each other that would make what i want to use it for the best. sorry if im asking to much or if anyone thinks i am being anoying but these are 1000$ questions and i really dont wanna wast 1000$ on somthing im not going to like.

(this is what i posted on avic411.com so i just copyed and pasted to here)