4 stroke, it really is much beter than 2 stroke. they are easy to handle and learn on. and are also much faster. why do you think all the pros se them..
for atvs there are very little to chose from in the 2 stroke side in those years. i prefer 4 strokes, and the entire industry is going to 4 strokes wether anyone likes it or not. the liberal EPA has seen to that.