OhioGuy, no, I don't have any experience with Kahr's more "cost conscious" guns. Generally speaking, I tend to shy away from any polymer-framed gun, have never owned one or even shot one. The MK40 Elite IS a ferocious mouse and its recoil IS quite snappy, but nowhere near "painful". When looking for a gun to fill that particular niche/purpose in my arsenal, I did a ton of research, looking at all guns in that general size range in that caliber, reading every review / forum I could find for months, particularly looking for any indication of jams, misfires, etc. mainly focused on RELIABILITY through thousands of rounds. The Kahr MK40 Elite is the gun I kept coming back to and settled on. Accuracy is what you would expect from any gun with a barrel that short ... in other words, just keeping all rounds in center body mass at about 3 - 5 yards. A target gun it is NOT.
I have never been a fan of the 9mm, consider them to be marginal for stopping power. I have never understood and will never understand why our military gave up the 45 ACP for a 9mm Beretta. I have owned a 380 and a 25 and both are just a joke ... better than a poke with a sharp stick, but barely. The only caveat (or negative) of the Kahr MK40 from me is that it is NOT a gun for a lady due to the hand strength it takes to rack the slide ... it doesn't require a gorilla, but it would be tough for any lady I know. That said, when you hold this gun it just exudes QUALITY.