Redflea
Android Expert
And Beast is decent, but without a different kernal flash, sholes 2.0.5 is now faster since it supports 1200mhz. Not to mention Beast doesn't have the touchscreen response fix yet, that I have seen anyway. I was using the latest Beast and I can tell a big difference after switching.
I flashed t3hSteve's kernel over Bugless Beauty while waiting for the Devs to add his patches to their ROMs. Great to see that Sholes has already integrated them, the keyboard and autobrightness patches are definitely must-have updates.
Download/install SMupdater 8 from the page, and run. From there it's pretty self-explanatory, and there is pleanty of info in the forum here to keep you going.