I saw the Jason Shulman video where he recommends 2:1 power to weight for 3D. I guess the trick is getting a plane that is made for it?(not too many) If you put the recommended motors in allot of 3D planes they don't perform. This is why you might see it more in the 25% planes. At 15 or 16 lbs. it's hard to get a glow engine that will allow you to rocket out of hover when you go low and get in trouble but when you get a gas motor that will do it you are too heavy! I plead guilty. Right now I'm working on a Lanier Edge 540T 1.20 with a Moki 2.10 .