My truck needs a new head unit, and I want one that will work seamlessly with my iPhone. Here's my wants... USB connection - for a clean sound stream and charging Bluetooth - For taking calls Does not take control of iPhone - I want to control the audio and other controls from the phone, not the head unit. I'm looking at the Kenwood KDC-BT742U ($219 at Crutchfield.com). The only thing I wish it had was a rear USB connector. I guess I can deal with having the cable connected in the front. Any ideas? Anything I'm not thinking of?