Your right about the topic on hand in this thread. I appreciate all the physics and theroy behind the posts. Once again, the beauty of this hobby comes out. It's a match between pilot and his plane. What he likes what he doesn't. My 580 feels really good with the 2 blade just as I feel much more comfortabe with the 3 blade on my Magic. It may be a mental condition but when I am out at my field and have several flawless flights under by belt and a smile on my face..........that's all that matters.