I just recently flashed the Steam rom by MrBobrowitz to my Droid. This is definitely one of the fastest and most stable ROMs I have used so far. It runs incredibly fast and very smoothly without getting too hot (mine is overclocked to 1Ghz ). The only complaint I've had so far is that I can't get the text color for the notifications to change, and I'm not sure if that is a problem with the ROM itself or with Spare Parts.
Overall though this has been a pretty great experience. If you want to give it a shot you can grab it in ROM Manager.