hotdeal or not, sat radio is incredible. Whether you get xm or sirius, get one, its such a tremendous upgrade over reg radio its not even funny.
Think about when you first got cable/sat tv vs the regular 5-10 channels you were getting. In radio its even more of an upgrade.
I used to hate long drives, with all the station flipping along the way and bickering over who's cds to play when you hit a dead zone.
Now i look forward to long drives. Never having to switch channels because you leave the range of that local station is HUUGE. I can keep it on channel 22 (sirius) and listen to the same crappy music ive been listening to since HS.
Music more than any other medium has the transformitive powers to bring back old memories.
On satelite, you will consistently find/hear songs that bring you back to before you had pubic hair.
btw, ive owned both brands and imho theres really no differecne between the 2.