We have a new yamaha F150 and a 9.9, had them less then a year, no complaints, great motors. We have a Tohatsu 4 h.p. that we've used quite often for over 10 years now, great motor. I had a used 15 h.p. Merc that I used back in the 90's, not as good as the newer stuff. I haven't heard anything but good reports on Yamahas. Bob R