I bought a Pioneer AVHP4100, slightly different button layout than the previous poster, with one round volume knob. This series of radio looks great and can be set to have the same red lighting as the rest of the car. It does require a module to keep the door chimes and all. But this one has iPod capability, bluetooth for phone and speakers. The only option this one does not have is the navigation. I use a Garmin for that in this car. GP GT radio.JPG