I have flown with the Master Airscrew Scimitar 20-8 on my 2.4 Brison and liked it very much too. It was turning at 7600 rpm and had good vertical and pull out with that prop. I also am flying with a Bolly Wood, 20-8 very similar to a Menz S. It turns at 7300 rpm, I like the Bolly more for 3D type flying however the Master Airscrew was not far off in my books. I also tried a APC 20-8 wide blade, did not like it. Spool up was slow and it did not have very good vertical.

By the way Zingers are not true Scimitar, they only have slight tapered tips, like many other props, however I too have found them to be rather poor performers all the same.

Never tried a Mejzlik, I would think it would work well, people like them.