RDs were everywhere in SoCal back in their day. I think my 1st "get-off" was astride either an RD or the Suzuki competitor...long ago when I was bulletproof...
My deal, since I know y'all are dying to know, was a succession of Yamaha SR500s and a couple Kawi Z1Rs (1st one I balled up in HI vs drunk in a car; bought the 2nd when I moved back to SoCal).
Last time I checked, a minty Z1R was nearly Road Runner money.