Do I have to back up or wipe if I'm going from rc1 to rc2 or just download
I didn't try any of them yet, however I hear that RC3 has some really nice extra features. I will get curious (and bored) someday and try it!
I flashed it after your reply and it's awesome. Its the first one I've seen to allow you to equalize the speaker and ear for quality.
I heard they were implementing that DSP equalizer into the ROM, I have installed on my Droid too, we have surely come a long way since the release of the Droid last year