I've got to say, that I've running pro bam which is based on cyanogenmod 10.2(android version 4.3!) And it has been rock solid for that time! I've had two updates I've installed ota....the one issue I do get is upon a restart, you tube closes, however if I try to start the app it runs absolutely fine :-)
Pro bam is however a combo of aokp, paranoid android which are both based off cm! It allows a bit of extra modification, but not as much as 3 minute mod allows :-( everything else I've tried in the Rom has worked perfectly, I would certainly recommend giving it a go or any of the other cm Roms, but obviously read a few pages of the appropriate threads prior to it to see what, if any issues others are having.
I remember flashing daily on the s2 the cm 10 nightlies, and I can not remember why I stopped :-P
I do miss some of the features from Sammy roms, but not all that much :-)
Naturally though you do flash at your own risk ;-)