M_Boats: Yamaha 4hp or Mercury 3.5hp on M17

Hi, I have a new M17 on order and I’m now shopping for a motor. I was planning to go with the Yamaha 4hp, but if I go with the Mercury 3.5 it would only weigh 40lbs vs. 60lbs, which I like. My biggest concern I guess with either of these is their ability to motor into a strong head wind. Does any have experience motoring in stong wind with these or like size motors on an M17?