It is a very good scope with great glass that does do well up to 50. Brighter than the Sightron SIII and NonED version of the SV. I think it is very comparable to the Vortex GE. I have heard that the Sightron SVED is in the same ballpark as well. The Trijicon Accupower is the same scope as the Delta, with different reticles, if you find that fits you better.
The reticle on the Delta was a little too thin for me. I would look at the reticle, and pick the one of these options with the reticle you like the most. I have really wanted to try the Trijicon, but I have just missed on the few deals I’ve seen come up.