I own 2 Cronus Gen 1s & an Argos. I also own NF ATACR, US Optics B25, Leopold, Vortex, Swampfox, Arken, and probably a few other brands. I like the Athlons. No issues what so ever. I'm not sure I would run them long term on a 338 LM or 50 BMG as some have mentioned but to each his own. Probably...