I'll be purchasing a new pistol soon and I want to get a .45 ACP. It's my first .45 and I'm torn between getting a Glock 21 or 1911. There arent many 1911's available in my price range (~$400-$500) Currently I'm considering a Rock Island 1911 or the G21. Anybody have a RI 1911? Can I get some input and suggestions for other guns within my range?