I have heard yamaha, Mercury, and suzuki. Although Suzuki is the quietest the mercury is a much better motor. Yamahas are junk. Evinrude and other 2 strokes are loud, but they are the most fuel efficient, and hands down the best motors. This is a common misconception because many think 4 stroke is the best. Four stroke motors are the quietest, but they only get good gas mileage at a very small non desirable rpm range. While a 2 stroke engine is almost as fuel efficient when pushed to the limit as the 4st is at cruise.vdz4k
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