Thinking I will build another 1911, thinking I would like a double stack, commander length slide. Items of debate: Cal; thinking about .40, .38 super or 9mm as the smaller bullets come into their own in a double stack gun. Frame; Caspian or STI? Cut frame or not for (Nowlin Wilson cut)? Looking for opinions, tell me what you would build and why. This could be fun. Wanna kill these ads? We can help!