I'm wondering about Athlon's use of the term "HD" vs "ED" when it comes to advertising the type of glass various scopes have in them. I think we're all used to the notion that ED glass is supposed to reduce chromatic aberration & produce brighter, truer colors. But what's HD glass? I guess HD=high definition? Is HD used in any other brand's advertising? Don't get me wrong - I've got a Midas TAC 6-24x50 on a V-22 Ranch, and it's got very good glass, at least as good as any of the Ares BTRs I have on four CF rifles. What I need to do to get a better feel for any difference between the Ares BTR & Midas TAC is to get rifles with both down to the 600yd range and see if I can detect any noticeable difference between optical quality of each. If the glass is essentially the same in both models (and I think it's very, very close to the same), then it boils down to the better turret clicks of the Midas, and illumination on the Ares. I've not shot the Midas TAC out past 210yds so far, and since it's mounted on a 22LR, it's probably not ever going to be used much past 300yds. The Ares BTRs OTOH, are mounted on CF rifles from 20 Tactical up to 7mm-08 Improved 30*, so it'll see fairly regular use at 600 & beyond. The toughest part of comparing these scopes at longer distances is finding a day w/o a tremendous amount of mirage, so I can at least get a fair idea of resolution/clarity at 600.
ETA - Forgot to mention that I've got several Cronus scopes & an Ares ETR on rifles, and while I believe there's very little difference in optical quality between those two lines, they're both superior to the glass in the Ares BTR & Midas TAC - not that there's a huge difference, I've shot the Ares BTRs at 600yds quite a bit, and it's plenty good enough to get the job done. But I've not spent any serious effort in comparing the Ares BTR to the Midas TAC.