Sourkraut - is your engine 2 stoke or are both, you and your brother's 4 stroke?

Minnflyer: the reason why I don't want to change to 4Stroke is because I've heard they are a lot harder to tune, also, I like that the 2strokes spin faster. But I just hate the mess.
I haven't owned a 4stroke yet, but that's what i hear (hard to tune)