OK, this thread convinces me to get the Matchdot then. The extra money isn't really a big deal to me, but it looks like I may want the extra versatility sometimes. Thanks.
Also, For targets I know a 2 min would be better, but I fell that if I use a white bull large enough for a thin white ring around the dot, it should be precise for a revolver like a SRH.
I use the black-on-orange "shoot and see" round targets for dots and fiber optics. They come in 3", 4", 5", 8" and 12" so you can find a size that will just "halo" your dot at nearly any range or dot size. It looks like an eclipse when your dot is centered just so. Really helps with groups.