(also posted in a wanted thread)
I was thinking about selling my Rainbow Machine the other day, but half an hour with an Arpanoid in front of it and I found a setting that I absolutely love, so it's going nowhere.
Secondary - 2:00
Pitch - not quite 12:00 (tune to taste)
Primary - 12:00
Magic - 3:00
Tone - 12:00
Tracking - 10:00
Magic Switch = On
I thought for a while that there was a "typical" RM sound that might get a little repetitive, but I've discovered that if you don't want that there are quite a few other interesting sounds in there too, I also have a slap-back setting that has a RM twist to it written down somewhere (I have lots of notebooks full of settings for RM, CT5, BitQuest and a couple of others).