Here's the unit I'm going to order in a couple of days:
http://www.crutchfield.com/p_113BT945U/Kenwood-KDC-BT945U.html?tp=5684
The only concern I have with it is that it has a rear USB port for Ipods, I am not sure where the cable will actually come out of. Do I need to drill a hole somewhere to get the cable out?