I installed my new Alpine CDA-7863 a few hours ago. It's awesome. I didn't think I'd like a head unit with motorized stuff, but it's badass. My system still needs lots of tweaking, but thus far I'm very impressed with the head unit. This is an upgrade from a Pioneer DEH-P5200 and it's way better than the Pioneer. People in the market for a head unit needs to consider the Alpine, it's sweet! 