Bumpy, that's a very good point -- "compare 80 to 100 since you have to gang two of the 2000s to run what I would want to." I should have added that lifting 50 pounds twice is still less likely to lead to back injury than lifting 80 pounds once, unless you try to lift both Hondas at the same time. (Bad idea.) And notice that the effort of lifting two Hondas instead of one Yamaha is even easier, since the two Hondas will automatically lighten the wallet, too!
Does anyone know if the Yamaha carburetors are any better than the Hondas?? The Honda carb jets are about as small as a human hair, I think. (I am not sure, since although I have carefully inspected a Honda carb, I no longer have enough hair to waste on scientific study.)