I've got Ameriglo " i dot " on my full size, going on 4 months now, the gun gets carried almost daily in a Galco Avenger holster-no signs of wear, been through a couple classes and all my range sessions are all drills from the holster.
These sights work great for me. The orange front is extremely visible in everything from ambient indoor to bright outdoor light. The dots are very bright in low/no light. Couldn't be happier.
I use a Novak front night sight on my 1911 (Trijicon does the dot). Also a great sight but I prefer the Ameriglo. I've had Trijicons on Glock & Sigs I've owned in the past (they were the only option then), the Ameriglo is really a great sight, fast pick up in any light. $104 installed at my local shop.