Depends on the setup. I have a friend with a KLX250 who's ridden the thing to Maine and back. How big are you? Height weight? Off road experience? Types to terrain? Big rocks, deep sand, mud, hard packed passes, chip and pave? It makes a difference. For a 200 lb guy, at 5'11" a DR200 will feel like a mini bike and maybe do 55mph. The same guy will have good power and suspension on a CRF250. Go to some dealers and sit of some bikes to get an idea of what is comfortable. In the $4000 price range you should have a lot of options in used bikes.