My cars have always been 4 strokes, my bikes have usually been 4 strokes (except the racing ones
), but it is 2 stroke every time for my outboards. Forget the arguments about fuel economy, there is nothing to choose in this area between a modern 2 stroke and 4 stroke. My reasons are the lighter weight of a 2 stroke, lower servicing costs, and they usually sound better
( and coming from someone like me who can remember the glorious sounds of various 4 stroke racing machines from the late 60's and 70's that is saying something).