So I have installed the Alpine unit in a friend's car.

Pros:
* Easy install
* Works with iPod
* Great audio quality

Cons:
* Holy crap, could you make the UI suck more
* Holy crap, you can only attach one USB device (iPod or FAT device) at a time
* last I looked the bluetooth adapter is backordered everywhere. (new model supposedly, bugs in previous model)

For the most part it works fairly well, and quality is good.. I just can't get over how terrible the UI is. Especially after using my empeg.

I still have yet to find any device on the market at any price tag that can replace my empeg. *sigh*