I think the Vess puts out the most thrust per RPM than the others, Here is a couple videos, The first is a Mejzlik 22-10 and the secound video is with a Vess 22-A and 23-A prop
Both props are turning around 7050 RPM and the vess put out about 3 lbs more thrust, Same engine same plane
http://www.youtube.com/watch?v=oKCfkTZ259E
http://www.youtube.com/watch?v=u7hn80t3UQ8