Hi , folks .I have been running a Vess 27A on my ( well run in ) DA 100,6150 rpm static, on a Aeroworks 35% Extra 260 QB. Amsoil 100-1 , 28 lb. 6k ASL, in CO. Mostly IMAC type flying, with some 3D stuff thrown in for kicks. 30+ flights. The general consensus is that the Vess pulls a little bit better than the Menz 27-10 in this application. Downline breaking is good. The prop is, to my ear, louder than the Menz. On the other hand the prop is very cool looking, and they tell me cool is good. Many people ask me at what fine funiture store I bought it. Now that they are available , I will try a 22" er on one of my DA50s and see what happens. Could one of you gentlemen post the web address for Vess? Thanks, Tom