i have a kenwood excelon and i love it, i just wish it played mp3 discs.
it really depends on what you like. dont buy it solely on looks. first make sure it has all of the features you want it to have (fold down or pass-through face,detachable face, mp3 playback, changer controls, bass/tone controls, remote, preamp outputs, etc.). then make sure the display is easy to read and that the buttons are easy to find. also make sure that the buttons are layed out well. you dont want the buttons that you use most-often to be small and clustered together. whatever you do, do impulse shop for a headunit, i did and now i regret not getting one with mp3 playback......................................