So i am getting a brand new bike. I will be doing lots of faster trails, and tons of hillclimbing. I am going with a four stroke, but should i go with a 250 or a 450, and a honda or a yamaha. I am thinking the 250 would be better because is lighter, and snappier, but the 450 because of raw power. I was thinking Yamaha due to reliability, but honda because of reliability and my previous bike was a honda. I just want some feedback from other riders, any suggestions? i also will be doing some logging dirt roads, so consider that as well. Thanks in advance for any feedback.