I got a NooElec R820T Software Defined Radio.
Only got a kernel stack trace once, trying to unload the automatically loaded digital TV drivers. And I didn't have to compile anything.
About half an hour after unboxing, I was using gqrx to get a waterfall plot of various things - BBC Radio 1, Capital, PMR446, the London bus trunked radio system, GB3LW, some local business users, and some (not-decoded) ADS-B plane traffic and some classical music being played in the CB range.
I think it needs a better antenna though - I can pick up stuff ok on my Baofeng handheld that I'm not getting through this.Also might be interesting to see if a Raspberry Pi 2 is powerful enough to run this.