Jeff Williams - Designer of the Morris Hobbies Sledge 540, has a Spoiler with an OS 160. He let me fly it. I admit that his engine had a problem with air in the fuel line at the time, but considering, it flew great with the OS 160. It was not fuel injected. When it ran right, it flew with authority. Hover fine, and pulled out of a hover well. Seems to be a good combination.
Kevin