I have thought about XM for a while and will get it when the money works out. The thing that makes me get XM over sirus other than my current radio is compatible with xm and not sirrus is that Sony and Pioneer have fully invested in XM. Do you really think that Alpine, ETC will be able to compete with those to to the point that XM will go under? There is a lot of muscle behind the XM set up and it is up and running 100% with two satelites in the air right now.
The long and short of it is the radio out here sucks and comes in inconsistently outside of town. XM will hopefully keep me sane. My only reservation is that they do not guarentee a signal outside the lower 48 so a trip to AK might not have any coverages.
My $. 02
Ted