RE: choosing a 2 stroke/4 stroke
I have a Magnum .52 coming out of a LT-40 and going into a Four Star 40 that I'm building now. I also have a Saito 100 that I'm currently flying with in my Four Star 60. I mean a Saito is a Saito, but I prefer the Magnum over the Saito for 3 reasons.
1: The price.
2: It sips fuel.
3: It's clean.
I like Saitos over Magnums because I think they sound better, look better and have a better mid range.