Just traded my Merc 250 XS. Never failed to start. Great engine but I went with the Yamaha 200 SHO. Wanted 4 stroke technology. 25 hrs now. Satisfied so far turn the key it starts. Does not burn oil nor as some have said "make" oil. I think it is going to be a great engine. I have no desire to go back to 2 stroke technology. If Merc had made a 4 stroke in the same weight range for hp rating as Yamaha I would have bought it. That is one reason I did not buy Suzuki. In smaller engines where weight is not as much of an issue I can tell you the F series Yamaha is very good.