Been running Gummyjar X 2.5, love it. great themes (currently watermarked). I use Go Launcher Ex, because the app drawer is absolutely incredible (shows recent apps, and currently running apps which you can close, plus you can customize the background/font/app pictures).
My nandroid backups:
ApeX 1.4.1 (very fast)
Rubix 1.9.5 (haven't updated yet)
Stock VZW 2.3.340 (scrubby)