Get the Trijicon HD's. I had the standard Trijicon night sights and I have shot a gun with the Big Dots. My M&P45 has the TFOs and my M&P9 Pro, M&P9C, M&P Shield 9, and my wife's Glock all have the Trijicon HD's. Hands down the HD's are the best sights. They are perfect for daylight, low...