I have the DNX6140 self installed. I have a Samsung Eternity and it does not work so great with hands free bluetooth calling. Other people have reported that the sound quality is good but people tell me that they can barely understand what I am saying. The menus are not user friendly but you can figure it all out eventually. I installed the optional Ipod cable and the control and sound quality is great. I really like the Nav and it boots up and connects quickly. My only gripe is with the bluetooth
I got the best of both worlds? I have pioneer speakers and a Kenwood HU