Your best bet really is a JP7. I'm a former 2027x and CST owner. The 2027s are hard enough to find these days, the 2127 was a contemporary and maybe a little harder to track down, and while the exact numbers are iffy, the most plausible guesses at worldwide production totals for the RG7CST is probably in the ballpark of 18, based on serial numbers. They come up for sale extremely infrequenbtly, and thanks to the growing prevalence of gear flippers on the net, I assume if they do they'd be stupid expensive, unless you're fortunate enough to know someone who knows someone selling one willing to sell at a fair price, rather than the market clearing one. They're all nice guitars, and the CST in particular was pretty as hell. But as a player, a CST was nowhere near what one would probably cost you these days.