We have a great 25XF with an older Johnson 225 hp 2-stroke. Compared to the 4-strokes she is loud. The boss wants a quieter engine. The four strokes are heavier. Do any of you have insight on a new engine for our boat? Are the Hondas best? Are Suzukis/Yamahas faster? Do the Mercurys have better hardware as in stainless steel, etc;? Is one brand more fuel efficient? By the way the 1989 Johnson still runs great. Considering the differences, advantages, trade-offs, might you give us your thoughts. Gary and Sue