I have Sirius and if the reception was better I might continue to subscribe, but with the monthly cost of satellite radio over $10, I just don't think it's worth it.
As far as programming goes, in my opinion Sirius is SIGNIFICANTLY better than XM, I borrowed my bosses car with XM for a weekend and thought the selection was awful. I am pretty happy with the channels and overall selection on Sirius, but I seem to lose signal everytime I go under a tree or even have trees on either side of the road. That is not something I'm going to live with when I'm paying that much. Anyways, I'll use my 3 free months, but unless reception gets better or the price goes down, I will not renew the service.
Maybe the reception is so bad because I'm on the coast and am at the edge of the coverage area? What are other people's experiences with satellite reception around the US?