When my buddy and I got our 2.6's flying, his motor had come out of another plane and was already broken in. With only 2 gallons of gas through my BME we took the 28-10 Mejzlik off of his DA, which was turning 6400. I reamed out the hole in the center so I could put it on my BME and with my motor not broken in it turned the Mejzlik at 6700. We both wanted to go to 3-bladed props for IMAC, so my buddy bought a 25-12-3 Mejzlik and he put it on his DA and it would only turn 5600. It flew the plane, but he didn't like the performance. I put the Mejzlik 3-blade on my BME and it turned it at 6000. I ended up going with Bela props--I have no comparison RPM's. THe Bela loads the motor more than a Mejzlik. My 28-10-2 Bela turns at 6500; my 26-10 3-blade turns just over 6000. I too, read the thread about the disgruntled BME owner, but from what he wrote in his thread, I too, felt that he had not properly baffled the engine, which is a must, and even though he was running it rich on the first 12 flights, he was cooking the engine, and the 13th flight was the straw. I love my BME. Good luck on your decision.

Big Bob