i have both 2 strokes and 4 strokes. i don't find either one more or less difficult than the other. i will say though, if you break in saito's like the direction say to, they purr like a very satisfied kitten. i would go for the four stroke. by the way, they do use less fuel. they intake fuel 1/2 as often as a 2 stroke, thus the name 2 stroke and 4 stroke.