Hands down this vote is for the 110s. My preferance is normally to two strokes especially piped two strokes but in the venues where performance 'and' reliability count YS is the only four stroke I have and would ever spend my money on.

Yes you see people sometimes fighting them and there is a good reason for that, They simply did not do the plumbing right in the vast majority of cases and did not follow the plumbing drawing when they set it up. It must be correct and the check valve must be in the right place and pointing in the right direction. Its not that hard to follow directions but you got to look at them.

John