Ok, so here's your argument in a nutshell. Stop complaining about limited playlists, no one wants to hear songs that aren't hits. If you listen for more than a few minutes a day, then you're a freak, and you're especially a freak if you listen for longer than a few minutes and want to hear more songs by the artists than what's played on FM. Wanting to hear good artists who are similar but not as well known is just straight up crazy talk.
Yeah, there's a reason people like you liked Sirius. Also, need I remind you, the bulk of Sirius' subscribers came for Stern and the NFL, not the music. And just to put a little extra something in there, XM has always had more subscribers than Sirius, even despite its crazy philosophy of playing more than just the hits.
It's you that should buy the iPod, since you only like hearing songs you already know.