I switch between Kangabean, Goldeneye, and Task650's AOKP pretty frequently.
I find it hard to find that sweet spot. Surprisingly, Goldeneye has been giving me the best battery life out of the three... I'm not exactly sure why. Yeah, most of the AOSP ROMs out aren't that stable yet, but I find that AOKP is the most solid out of the bunch.
I don't use all of the features of Touchwiz, but I find some of them to be pretty helpful in my daily usage. I enjoy running barebone-stock Android as well, so I tend to backup, wipe, restore, backup, wipe, restore, so on. I think I'm gonna try out MoDaCo Switch since I like switching it up a lot.