Sherlock, you asked for opinions. I did give mine in saying I liked the pro as well as the mejzlik. It is just an opinion, and I have lots of empty fuel jugs to back me up. You like the mejzlik and that is fine, but I did not come up with some comparison to invalidate my findings. I have found that the pro accelerates as well, just my findings. Obviously you felt different and that is fine. But you have to agree that any 20" prop is too much. We tried those too, and found the same. The pro is a "low quality prop" is your opinion. The attached picture shows the pro does the job.
Best of luck, Jeff Williams