After 14 on CM7, I'm at 46%. For me, it has everything to do with wiping fully, installing apps from scratch unless I require data backup, battery calibration, then give it a week or two to level out... Seems to work best after that. I agree, however, reborn generally gets better battery life.
Lol yeah...I think 7 hours draining 60% is pretty bad...I try to get maybe 2 to 3 hours out of 10%...I get about the same battery life you do on CM7.