produce the as much or more excitment during acceleration as the yz250? This sounds very iggnorant but there is simply no way I am able to test ride an MX thumper unless i bought one. I could care less about shaving off lap times or reducing fatigue through a smooth and boaring powerband. To me, fun =intensity and I love the intesity that the two stokes provide during acceleration. Does the yz450f (which is what I will buy if I get a thumper) produce a feeling of excitment and intenisty that suprasses it's two stroke counterpart or is it more mellow and slow feeling?