I'm 6' 5'' 230 lbs and i need to replace my honda cr100f. I am going to be riding up and down hills, trails, open fields. I am thinking about the ktm 450 exc or the ktm 530 exc (or the equivalent of another brand). I want the bike to have enough power to get up steep hills, but i also want it to be responsive, and have fast acceleration. So, which one should i get?