Great Planes has a good reputation. I have been flying the .40 size extra 300 for many years. I think the one I am flying may be the same one you're looking at, but I'm not sure. Mine I build from a kit, so it may be different. I have a ST .51 and the power is OK. The plane is a too heavy for 3d but will fly nicely at 3/4 throttle and full. It snaps quicker than any other plane I have flown (this is a good thing). You must keep some speed up on landing. this plane is not for beginners.