I got my XMDALP100 adapter from Crutchfield the other day and finally installed everything this morning. I have only listened to some stuff breifly while sitting in my driveway, but I love the service already. It took about a half an hour or so to install the adapter and receiver. For now I have the antenna on the dash as I am a little weary about puting outside of my truck. I live in Vermont and between the snow and freezing rain I am going to see how it works inside the cab first. When spring comes I'll try something different. I am so glad I don't have to listen to the local radio anymore. Around here they either play the same crap (80's) that I listened to in high school or it's country music. Don't get me wrong I do like a lot of 80's stuff and I do enjoy a little country (very little), but when thats all there is it gets really really boring. Has anyone else installed one of these on their Alpine HU yet? What do you think?