Well, the Kenwood has higher preamp voltage, so that's nice. All and all, they are very similar units according to Crutchfield. I have never been disappointed with either Kenwood or Alpine headunits. My last Alpine, which is now almost 8 years old, is still running in a friend's truck and it sounded great when I had it. My last Kenwood (Excelon KDC-x715, three years old) was running strong and sounding great when I took it out of my Eclipse a month ago. So, basically it comes down to you. If Crutchfield says the Alpine won't fit, that means you'll probably need a kit and it'll stick out from the dash a little, but if you want no hassle drop-in stuff go with the Kenwood. I really don't think you'll be disappointed with either unit, IMHO.