If a person can handle recoil, I'd recommend a .45 ACP every time. Most don't shoot enough to master it though. For a novice shooter wanting to move up in caliber, I'd recommend a S&W M&P, it's a soft shooter for a .45 and extremely reliable. I don't consider a 1911 platform pistol reliable until I put at least a thousand trouble free rounds down range. I'd dare say 90% of new 1911 buyers can't detail strip it, tune an extractor, or properly diagnose a FTF. I've carried one off and on since 1972; they are aficionado pistols in my opinion.