Hello tributestoall,

For every dozen people who say buy Saito you will find a dozen who say buy YS. They are both good engines. I personally have only owned a Saito but would like to buy a YS the next time I purchase a four stroke because of the built in fuel pump. The pump shouldn't give you any more power but should keep the fuel supply constant regardless of plane attitude and tank level. This translates to better throttle response and reliability. I personally find this very appealing. Others will disagree.