me and my brother have been getting into the racing thing a lot. My bro just seized his 250f on his first race from an injury and now he is out again. My dad said if I sell my old bike he will buy us a practice/extra bike. My question is 2 stroke or 4? My dad doesn't like 2 stokes, but I think its more practicle to get a 2 stroke but he doesnt. What do you think?