Nonuro, the unit came in this weekend, and I've got it most of the way installed. Functionally installed, still trying to figure out how I want to do various cable routing and such anyway.
So, I realize I dont know what to say about it, as I dont have experience with other units to compare it to. I will say however, that so far I am really liking it. Replacing the stock unit with this made a dramatic difference in my sound quality. More dramatic than the speaker upgrades I'd already done. I think I am actually most of the way happy with my soundsystem now, outside of cleaning up some wiring.
But anyway, as far as the part you care about. It seems to work pretty well with the iphone. Bluetooth works nicely. It was able to receive the phone book from the iphone via bluetooth, which I have heard that some other units have issues with? I can make and receive calls without too much work, although I havent gotten the microphone properly routed/placed yet.
The ipod functionality also works pretty well. There is no cover art displayed on this unit, but I knew that when I bought it. It also doesnt do video, but again, I knew that beforehand. I am able to browse my songs by artist, album, playlist, genre, etc. I wouldnt call the browsing very graceful however. You spin the knob to scroll through the list, but it only devotes a few lines of the display to displaying that information. As such, when you have a large library, that's a lot of scrolling. I dont think I would be comfortable trying to browse much while driving. I suspect I'll just work more from shuffle and playlists when I need to pick stuff while driving.
Despite that, I think it offers all the functionality I wanted. If there is something specific you want to know if it does, let me know and I'll see if I cant figure out how to do it.