I've been reading up on red dots for a 22 pistol and on one of my FB groups (SW22 Victory) the topic came up .
One of the posters is the owner of Wirtwien gun store and they do raced 22s .
The thread was discussing FF3 vs Venom for steel plate. His response:
If shooting Steel Challenge NEITHER are a good option since both have short windows,, a TALLER window is much preferred in speed shooting. If wanting the Burris we have many used ones for sale in both 3 and 8, they ALL still have full warranty and all work perfect. People trade them in for Ultradot L/T and C-More RTS2 and Railway/Slideride. If just plinking the Burris is perfect, high quality never wear it out. The Vortex, RTS2, Ultradot and many others are ALL made by Tokyo Optics in Japan, the Burris is not but still very high quality. Dot size will depend on your most common use,, the 3 moa will be about useless in Steel Challenge but better for target shooting and hunting. Steel,, bigger is better brighter is better,,