No I agree with both of you (I have a 1/4 scale extra with a 45cc gas engine) and I like the extra power. I guess I didnt say what I meant. The extra power of the ryobi (31cc) comes with more weight which is 62 oz. The poulan (25cc) with CH ignition that I am looking at comes in at 40 oz. So its a tradeoff either way. I am just wondering what would be the best out of these two engines for flying this hellcat? I think I have it narrowed it down to these two engines anyhow.