I'm 63 somewhat far sighted. But my left eye shifted somewhat, Right eye (dominant) stayed the same from my last eye exam last year. I can shoot with both eyes open. My EDC is a Ruger SR40C. It is specifically for SD. I have no interest in any kind of shooting matches. There is no one i need to impress. I do need to be able to (If the need arises, to get on target quickly and get bullets on same.) I hear a lot of pros & Cons on these sights. Mostly they help you acquire target quickly, BUT.... they are not as accurate as lets say Trijicon HD's . What say you. I'd like to make the investment, but yet i have never heard from anyone who has used them. I have only see pro & con videos.