Razor G2 and G3, EOTech Vudu 1-6x, Swarovski K6i, Kahles K16i, Trijicon Accupower 4x/6x/8x, Steiner P4xi, NF NX8 and ATSCR, PA Platinum 1-8x, VCOG, Burris XTR2 5x and 8x, some random Leupolds, Cmore C3, Viper PST gen 1 and 2, Bushnell SMRS and SMRS II, and the whole gamut of sub $500 Primary Arms, Athlon, Strike Eagles, Burris', Bushnells etc.
The VCOG, NX8 and ATACR are are almost in their own category of unpleasant and unintuitive to get behind with terrible 1x performance, with the Bushnells trying hard to be as bad. Even a $350 Burris RT6 is easier to use. Razor G2 is the best. Cmore C3 is right behind it. P4xi and Viper G2 are great in that price range.
A couple weeks ago at a match a Trijicon sponsored shooter offered to let me shoot a few of his rifles. With a 8x Accupower and the 8x VCOG side by side it was very hard for him to say anything good about the VCOG. Good glass is what he came up with. I prodded him for more thoughts on his VCOG experience and it pretty much ended the conversation.