Of larger inport is WHY?

If the cost of fuel is a major concern with a .09 to .15 engine someone needs to take up aluminum can collecting as their new hobby. The efficiency of glow engines in this size range is far superior to that of gas, and the weight is lower as well. I would think the cost of a quality glow wngine in this size would also be less than a gas engine.

That's my view, but others clearly have a different viewpoint.