OK.. I am one day away from my purchase. I ride 50% trail (rocky tight eastern) and 50% MX (practice only). I currently ride an 05 CRF450R. I love it for MX and love it when going fast on tight trails. However, anything other than "race pace" and it is a tiring stall prone beast. I am going blue (my son is on a YZ250F and I have a ball on it) and am 90% sure it will be the WR. My guess is that I will keep the CRF for MX and ride the WR off road. I am interested in hearing if anyone has both an 07 YZ450 and an 07 WR450 (or have ridden both) and would like to hear your opinion on the pro's and cons of both for trail duty (I have no plans to MX the WR). My guess is that the YZ would be very similar to the CRF, meaning very powerful, stall probem and quite stiff for offroad work, whereas the WR would be a little tamer (less hit) and a much plusher in the rocks (and have a button).