I prefer the smaller 2 MOA dot on my Primary Arms Advanced but other than that I can't find a single thing about the Vortex I don't like. Well I'd like for it to have the long battery life my PA has but not many red dots do have that. I would have had to pay a lot more to get that when I got my Vortex. It's still holding zero 18 months later. With a lifetime warranty I can't see a lot to complain about. I probably should drop in a fresh battery come to think of it. I guess the hard part is remembering to put a new one in before you need it and it doesn't work.