I'm buying a new 18' pontoon boat for a small lake and I plan to put a new 4 stroke 40 hp motor on it. What's important to me is quiet, smooth and vibration free at low speed, and dependable, trouble free long life (I tend to keep things for a long time). <br /><br />I don't mind performing the recommended maintenance, but I do mind expensive repairs. The dealer sells both Honda and Johnson, which one is best? Thank you!