I have to go with OldMan45 here. It'd darn impossible in IMHO to beat a 45 however the two 40 cal I own, S&W40 FS and Sig P239 40 have never failed in any respect. One is bedside the other is an occasional carry. My favorite carry remains a 642 and Model 10 round grip. I'm old fashioned that way I suppose. I have also never walked out the door feeling underarmed and then again I believe that the words found in that great movie Monty Python "The Holy Grail" - run away! run away!