I have 2 pair of GPO bino's - 8x32 ED's and 10x42 HD's. I'm very happy with them. Bright & rugged, they seem like a great value to me regardless of where some of the parts are made which seems to be the big beef about them on the Fire. I also had a pair of BX4 Pro Guides before the 10-42 HD's and didn't like them. The glass was good but not great for the price. The eyecups suck IMO. First hunt I used them on one froze. They weren't unusable just a PIA and Leupold did repair them but I no longer own them.
I haven't used the 10x42 ED's but the ED glass in my 8x32's is very good. When I look through the ED's and switch to the HD's it's not like the lights just came on. They're slightly better which would be expected at twice the price. It would be nice to compare the Athlon's and GPO's side by side but the only way you could probably do that is to order a pair of each and send one back after trying them out. Good Luck!
Last edited by Bill_N; 01/04/22.