I am looking to buy a bike for dual purpose. I am not shure which wr to purchace. I have owned a 426 that I sold after 1 year because of weight and starting issues. Now I have a 01 yz 250 two stroke that is great but not street worthy.I am looking at the 250f but not shure if I will kick myself for not going with the extra power of a 450f. Any comments ?