RE: 2 stroke vs 4 stroke
Can you picture a Harley with a 2-stroke? (Rrrrrring-ding-ding-ding)
Personally anything above a 40 sized glow plane I use a 4-stroke in
120 size and up, I go gas
Why are they better? Sound, performance, sound, better fuel efficiency, sound, and a LOT less gunk left on the plane
And did I mention that they sound better?