Flashed over RC0 without wiping data. No issues that are rom related. I still have a random reboot issue while using bluetooth heavily (very random, sometimes I can go days without a reboot, other times I get 2 almost back to back). I think this might be a hardware issue though. I plan on starting fresh by sbf'ing and see if it helps.
Other than my bluetooth issue, rc1 is definitely faster. It feels like cm7 should have came with this phone.
Sent from my Droid X2 running CM7 RC1