I really like mine (Alpine 9885, that is)!
I looked at several units with iPod controllers and, IMO, Alpine has their interface worked out the best. It's pretty intuitive (not quite as friendly as the iPod itself, but close), and it's the fastest of all the ones I looked at (Pioneer, Kenwood were the other two brands I considered). I like to go to shuffle mode as well, but the interface also allows me to find songs/artists/playlists quite easily.
Also, their display gives you the most info/options (although it can be a bitch to read in the sun). As for display color, the info screen has sort of bluish-green letters/numbers on a black background - and you can't change that. However, you CAN change the color of the buttons from blue to red (they actually look blue during the day and glow read at night - easy on the eyes). One other neat feature is the "blackout" mode - you set the unit to go black (lights, display, the whole thing) unit until you touch it (although, for some stupid reason, this doesn't work with the radio - just the iPod and the CD).
...and, of course, you can add Satellite and HD Radio to it.
Holler at me sometime if you want to take a closer look at mine. I'll make a point of being at the next WNGTG for it.