One point here is the higher the number the more of a missle it will be and size does not matter. I had a Lanier Stinger 120. Wingloading was somewhere aroun 9 or 10. Although a large plane it floated around and also on landings. I have a little DC F-20 Tigershark with numbers in the 30's. It is a flying bullet with no glide ratio and lands hot and fast or you will stall and crash.