thinking about either yz450f or yz250 2 smoker. have 03 250f. looking for more oomph as i ride mostly sand trails. i have ridden for 32 out of my 36 years. all two strokes until my 250f.love the 250f. have only ridden a 450 for a few minutes. have read all about yz450f's abrupt tiring power band. who has an 05 and how are they? i can get an 04 slightly used with enzo suspension and fmf slip on. thinking hard. will that fmf smooth the beast or add to it? those new 2 smokers look good, my last one was an 01 yz 250. great bike but tiring to ride as i did not ride often with that bike. i'm riding more now 2 or3 times a month. i am in better shape now and could handle the smoker or the beast. give me some info, ride reports opinions etc. thanks maybe i need a crf450. perfect combo of power and usability?