I have been running the RP23 since I purchased my RFX. I had an air fork up front and went coil and have been immensely impressed w/ the coil over air. I decided I should give a coil a shot in the rear. I originally thought about the Roco TST coil as it has a lockout for lazy fireroad climbs. Funds are quite tight w/ the holidays so when a Romic presented itself @ a rock bottom price I couldn't resist. So from past experience w/ Romic's, old Van's ran springs w/ a higer rate than say DHX's, Roco's on the same frames. A search came up w/ a few people running 600 - 700lb. springs on older RFX's w/ newer shocks. Online calc's listed 700lb + for my 205 - 210lb. weight .... Any recomendations for a spring rate ? Thanks.