I've used there so far:
- CM7
- SensatioN 2 - smooth, stable, nice theme, no OC, TW4.5, no overscroll glow - recommended
- Batista - smooth, stable, OC daemon or use SetCPU, theme hasn't been good since 3.7.2 (you can flash that theme over the current 3.7.6)
- Cognition
- Check's - looking forward to trying their 2.5/3 release. their current 2.0 version is promising.
- DlevROM - probably going to stick with this one for a while. nice theme, smooth, stable. i flashed TW4.5 and the version 1.1 battery.. works and looks much better this way.