SBMM is going to suck for the top players, of course it is, that's your own fault. For us, less than 1KDers, SBMM is all that makes crucible fun... EDIT: As for playing with people of your GFs skill level, make sure she's the host and fireteam leader. That seemed to help us during CD. but in the end, if you really are about just having fun and trying new builds, a few deaths/losses should matter to you should it?