I have the Extra 300 with a GMS .76 in it. In my opinion, it's a perfect match. It has plenty of power. I don't own the Edge 540, but saw one at the field....with a .91 4-stroke, it needed A LOT of nose weight, and had enough power to fly around. Unlimited vertical was out of the question. If I had the option to choose one of these two birds again for my .76, I'd definitely pick the Extra.