I'm trying to separate myth from reality, and every video game and movie seems to hype up the .45 like some middle ground between 9mm and .44 magnum, and while personally I tend to favor the 9mm because magazine capacity is nice I found that sentiment echoed in some research I did a while back while toying with the idea of moving to California for work and to be closer to online friends. A lot of professional shooters seemed to say between 9mm and .45 their favorite was 9mm because the only major factor between the 2 was price, and 9mm being a smaller bullet and the most popular cartridge for handguns on Earth costs less to make. 45 does probably have some more knock down power but how much more? Assuming identical loads (let's just say ball ammo) center of mass hits on a bad guy at about 10-15 yards would one .45 do enough to reliably stop the threat with one shot? Because if it can't live up to that then it would seem like the ability to get back on target and having the extra shots in the magazine for that follow up shot are doing so much more work than the extra weight of the .45's slug; not to mention we're already having to deal with the fact that each miss is that much more important if you have less shots to make in the first place.