RE: Are 4-strokes better in the cold than 2-strokes?
I think that they are about the same in the cold. 2s versus 4s Best to start them up inside if that's possible. We used to do that with our .049's when we were kids. Flew U/C and the school yard was next to a friends house.
The OS and Magnum engines are a lot alike. Choose by what you prefer and can afford. [&:]