Hello! Im looking into getting a new bike, like i said i am 15 years old and im about 175lbs. I had recently come off a ttr125 but i did have some experience with a 250f, which my buddy let me ride. But i also was taking a look at a yz250 2 stroke, but my buddy said i will be going to through cylinders, pistons, etc, etc. But I was looking at the 450s, but how hard are they to ride in the woods without a flywheel weight and stuff like that? Or should i just stick with a 250f instead? I have ridden all 3 of these bikes ( yz250f, yz250, and yz450f But i have loved them all and especially the 450, you just got to love that power! But tell me what you guys think and you know if you dont mind giving me some tips and stuff like that. Im just looking for a awesome bike, but thats gona be reliable for me. thanks guys!! god bless!