I cant decide what to do. I used to have a 04 yz450 and i loved it. I had to sell but am now looking to get another bike. I just rode my buddies 07 yz250F and it felt like it had almost as much power as my 04 450 am i insane or do I just not remmber. I ride both track and trails and am worried about climbing hills on the 250, i am six foot 180 pounds. Are the new 450's more powerfull than the 04, i dont want to much power but i also dont want to stall on a hill climb. Any advice?