I have just sold my 99 YZ400F and now I'm in the market for a new bike. One of the reasons that I sold my bike is that it was too heavy for my size (5'8" and 170LBS). I really enjoyed the power but I felt that it was telling me what to do, more than me telling it what to do (if that makes any sense). I'm really interested in the 250F but I have never tried one before. I consider myself to be an intermediate rider and ride mostly track. Is there anyone else who has ridden both bikes (400/426 and 250) and have some advice for me. I have even been considering a 250 2-stroke again but I love having a bike that I don't have to change the top end every couple months and mix the gas. I want to stay with a 4-stroke but I don't want to sacrifice a lot of power. Also I don't have the cash to buy the new 450F which is lighter and would likely solve my problem. Any advice would be greatly appreciated!! Especially any rider who has went from a 400/426F to a 250F or a 250 (2-stroke) to a 250F. Thanks!!