[willy]

Ferm, you are a pretty smart fellow


But I would disagree on only one point, Yamaha, I think that in the end even though they are a lower compression engine and do not put out the low end grunt of the Mercs they put out more than enough for just about any use short of around the pylon racing. What little they lose power wise they make up for many times over in outright reliability.
Now if I had your mechanical skills I would run mercs all day as I could fix just about anything that comes down the pike, but for an average joe blow like me the reliability and trouble free service far outweigh the slightly lower torque value.
As a second choice I would run JohnnyRude carbs and take the fuel hit for the longevity and durability factor.
The dozen or so friends of mine that have been very active boaters and very serious fisherman all their lives, men whose opinions I respect have had every motor there is, a few of them work on them themselves as they are skilled mechanics like you, but to a man they agree with the above statement. And to a man they have told me that for shear power it is tough to beat a Merc but have your wallet handy.