I didn't like the looks of them at first, but they grew on me a bit. Present day liter bikes are crazy fast. The only redeeming quality is the linear power band, which makes for a friendly street bike. Well, as long as you don't have a slip of the wrist.
djb, I found a 2004 RC51 for sale with a healthly list of mods already done. If they can come down on the price, I may pull the trigger. Just a cool bike.