I'd love to hear more about how this specifically compares to the Athlon Ares
Vortex is crazy light. I like the eyecup and eye-relief are better on the vortex and I've never been a huge fan of the finnicky eye-relief on the Athlon, but it works. Zoom and focus rings are better on the Athlon - less resistance and smoother). Lens covers are better on the Athlon, specifically the objective lens cover (big fan of the covers with the center pinch things that lock inside of the scope body). Vortex doesn't have a rotating collar, so if you rotate your scope to use it with a window mount or something similar, the vortex doesnt allow you to do that. As others maybe mentioned, the footplate on the vortex fits in the VA-5 panhead without any QR plate, which is a plus. A huge bummer for me is that my Magview doesnt fit on the vortex.. the eyepiece is too small. I did reach out to Magview and they said they are coming out with more sizes next year.
Here is my completely unscientific comparison and assessment of the optics.. I stuck a USAF resolution chart up at 200 yards.
Compared them mid afternoon on a sunny day. With the Ares, I was able to clearly see line 3 or 4 under the -1 column. The best resolution was at 38-40x. With the Razor, the lines were a TINY bit sharper, and I was able to see the 6th line under the -1. I could see that same line sometimes with the Ares, but it took a lot more focus/concentration/squinting with my eye. The vortex was pretty good with the zoom in the mid 30s, but was usable all the way up to 39x. FOV is better with the Athlon, but that was to be expected.
Then I tested both during the last 20 mins of light. I would say through most of the zoom range, the brightness was pretty equal. The athlon obviously has a higher zoom range, but in the last 10 mins of light, it gets pretty unusable above about 38x. The vortex was no longer usable at 39x, but was fine around 34-35. I was able to see line 6 under the -2 column with both scopes all the way up til dark.
I had a little wind while testing.. Had the Athlon on an old tripod thats kinda a tank, and had the Razor on a Sirui 024. The lightweight Sirui with the lightweight scope definitely shook more than the other setup. I didn't put the Athlon on the Sirui to see how much less shaky it was.. I've contemplated a beefier and more solid tripod in the past, and I'm sure that would have made a difference, but that kinda defeats the purpose of going to a lighter scope..