I started shopping for a new Bennington 20SLX. I have a choice between a 70 HP Yamaha, Evinrude, or Mercury. I don't know which one I should go with? Yamaha and Mercury come with a 5 year warranty and Evinrude comes with a 7year. One dealer is telling me I should only consider the Yamaha because of its low noise and good fuel economy. What are your thoughts?