Enomther's TheOfficial on the Nexus One is amazing. Most of the features of CyanogenMod, but fixed and made more stable. Everything is built right into the ROM, it's super quick and snappy, and the phone never randomly reboots or runs super hot or any of the other reasons I switched away from CM6.
If you have a Nexus One (or a G2 - he's starting development for it too) you should check out his stuff. It's hard to go back afterwards.