Peter Keelty is 190#, 6' 2" and he skis the PR in a 175cm length. (I'm 180# and ski the PR in a 185cm length.) The PR is not as soft as people claim. The middle of the ski through most of the tail has a moderate flex. The gotcha is the tip has reverse camber and is soft. If you tend to press your weight towards the tip of your skis during a turn you will overpower the tip. If you ski high speeds through heavy crud the tip will get deflected. The PR is best for finesse skiers, off-piste terrain that requires quick turns and/or moderate to slower skiers.
i am 210lbs and have skied the PR in a 175 for two years now. i use this ski about 70% of my ski days and love it in everything (trees, bumps, crud, powder), weight does not seem to be a factor. i am looking forward to sking the 05 version this season.