i am an experienced woods/trail rider and race an occasional hare scramble. i recently sold my '96 xr250 (have been riding red since the age of six), but am looking for something with a lot more pep and i've decided to go blue. i am 5-11 and weigh about 220 lbs (230 lbs with full gear). almost all of my riding here in WA state is in tight/technical trails and you rarely have the opportunity to really open it up (there are no long open stretches). i do not ride in the sand but do like climbing hills. i'm looking for some other opinions/input on which bike would best fit my size, type of riding, etc. i've done a ton of research and have narrowed down to the WRF, just need to determine 250 or 450? any help would be appreciated.