We are talking a few ounces of weight difference at most. In the 50cc class and up, I just can't see any wing loading issues and the CG on all my planes is easily adjusted with batteries. I never need or use dead weight like lead. The increase in HP more than covers the few ounces.

We could go on and on, but the charge was that you get a better 'value' with these other brands over 3W. I don't believe the facts will back this up. That isn't to say that the other engines mentioned in this thread are not good engines. They are. And I have used most on them over the years. I still like my 3Ws for all the reasons mentioned above.

One not mentioned, and one that also gets a bad weight wrap is FPE. Also a favorite of mine for it's domestic source (PA), user friendly ways, billet crank case, power output, reliable ignition (even though now made in China for C&H) and durability.