My father and I and also 1 other guy at our local club all fly 50cc size planes. I have the 3.2 Brison, father has DA 50 and the other guy has a Aerovate 55cc. They both have the MX2 and I have an older Edge 540 which is slightly heavier maybe a pound or pound and a half more. The planes all run the 23B Vess props. All three planes run very very close as far as speed and vertical pull but the Aerovate does seem to have a slight edge on the DA and the DA a very slight edge on mine.