OK, not to belabor the "57 Channels" aspect of XM and Sirius too much, here's my basic complaint: The very same people who turned "underground radio", the late 60's/early 70's radio that was an adventure to listen to, into "formulaic radio" are running both XM & Sirius programming departments. When XM and Sirius were lining up their personel, they raided commercial radio for their programming talent. What I was hoping for was a channel or two (among the 500 or so) that might allow an announcer to say what they wanted and play what they wanted. Every format (channel) seems to offer the carefully auditorium tested music (specific to format) that commercial FM offers. Believe it or not, there was a time when announcers could segue and talk there way from a country sounding Flying Burrito Bros. track right into Hendrix psycho rock track and make it all make sense. (And no, I wasn't on drugs.) It was a SHOW, ENTERTAINMENT, PERSONALITY! And you know what, I don't remember anyone being fined for obscenity.
And regarding "fidelity". Sometime in the very near future (it's testing right now) AM radio and FM radio will be digitized. You won't be able to tell the two apart and if you have any reception of the station at all, it will be digitally crisp. I know tests are underway in New York right now. No doubt it will be necessary to upgrade head units when it becomes widely available.
I still hope that once XM and Sirius get profitable, they'll get more "sirius" (sorry) about offering better variety.
kdlp