I have seen tuners at Crutchfield. www.crutchfield.com They have the sony and a pioneer, I think. I have listened to Alpine, Sony and Pioneer in demos from XM radio (the van showed up in my neighborhood) but all were through headphones and it was a bad environment to compare, and all were car models. Good luck. I have another post on XM radio and am seeking info from anyone with knowledge of how good a service this is.
