Folks:
This is a gasser newbie question, which I do not see addressed in the forums.

The guys at my club counsel that gasser less than about 45-50cc are too heavy for their power, and vibrate too much to be of much use. That takes us to about 75-80" wingspan aircraft. Is there consensus on the use of smaller gas engines in the 1.20-1.80 (glow) sized aircraft?

What are the better engine choices?

I would like to avoid the mess of glow, without the relative performance penalty of electric, and hence the 20-34cc sized gas engines seem attractive.

Any advice?

Thanks