Dude needs a 4 stroke! Nuff said! If the skill level is low, and the "lipids" are high, 4 stroke! I think the early XR Hondas make the best 4 strokes ever produced in the world. XR400R. But if I had to get a cheap, reliable, modern (2004+) 4 stroke, I'd give the nod to the Yamaha WR series. Not for any other reason than they are good engines. They need tweaking in other areas. But the motor lasts! And that's important as hell!
nevermind