Spotters Thoughts on Athlon Ares G2 vs Vortex Viper HD?

[WeeHooker]

I'm in the market for a new spotting scope to be used for target shooting out to 300 yds or so. ( That's the longest distance I have locally). I currently have a 20 year old Miopta 65MM angled spotting scope that is decent enough but very fidgety to adjust. I'm thinking it's time to add another to my quiver. Likely a full sized 20-60x85 in an angled eyepiece. My budget is $800 +/- and I think I've narrowed it down to these two models. ( I own multiples of both Athlon and Vortex scopes and have been happy with performance, quality and bang for the buck on both brands.) So has anyone compared these two mid priced scopes? Thoughts on glass? Deals to be had on either? I'm interested in all experience out there.