I have 1 day of flying an 1 day of driving in the grass in on my alpha an at first I had trouble with speed in the grass just all kinds of problems seems this 3 blade works on perfect runways maybe, after reading here went with a master airscrew 11-7,I can't tell you whats the best but I just love what it did to my plane it would probable take off on any field you would try now just really can't believe the power it has now, throw the 3 blade away an don't look back, imo this is the best trainer i could have right now power with good handling I flew with the throttle back an flew longer on less fuel an had way less grass on my plane with the 11-7, I know I am just a beginner but I don't see the 3 blade as a plus at all but the motor is I think we might have bragging rights on the motor we had trainer day an the alpha was the strongest motor out there I had a great day flying I might also add that I tried bigger wheels 3.5 on the back an put 1 of the 2 3/4 stock back tires on the front first an this helped some but i don't believe as much as the prop I could probable put the stock tires back on an be good 2 but i like what i have now an will just stick to flying with less time driving what a blast I just couldn't be happier, an just had to tell somebody......I don't want to ague about it maybe with more time I might see something else i'm sure but i'm flying now .