Ive had Xm for a little over 4 years now ... I just put Sirius in my trans am yesterday.
I have 4 xm recievers....
Starting with the oldest. The Pioneer headunit thats in my truck (used to be in my old ranger). I have like the GEN 1 tuner box for it too, but still sounds excellent. Thats in the second picture on the right.
Then I got a SKIFI2 that I take everywhere. I got the boomboxes for it (one im modifying right now with bigger speakers), car kit which i put in my work truck when i take long distance runs, and the home kit which is pictured. Thats in my spare room...
In my bedroom, I have the Polk Reference XR12 and it soudns the best. No digital compression can be heard at all. I like it, little pricey though....
Then I got a delphi roady 2 thats in my dads truck. Its cheaper that its on my plan so instead of him paying 12.95 a month, its 6.99 a month.
Finally after yesterday of having terrestial radio in the trans am, I signed up for sirius. To tell you the truth, I like the rock selection better then XM. I just hate Howard stern. The Sirius tuner is mounted under the passenger seat, and I had to use double stick tape to fasten the antenna on the roof. Damn fiberglass cars ... lol
Satellite radio is cool ... lol