This would probably do better as a general CyanogenMod thread since limiting it to just CM7 seems rather specific. Anyway, I'm on CM7.2 myself; I've tried 9, 10, and 10.1, and while they were amazing, none matches the battery life of 7.2, especially if you're a heavy mobile data user, like me. Also, I have an LG Optimus One (p500), which is a rather old phone, so cm10.1 was really pushing the limits. So it's back to CM7.2, which is still awesome despite being a relative oldie. Add in some tweaks and mods, and my phone zips along like greased lightning.
In the interest of furthering discussion, I'd like to invite people to post screenshots of their CyanogenMod setup (appropriate pics, only, so as not to break iStorya rules). Here's mine:
