My CM9 has become my #1 carry pistol. You're going to get all kinds of opinions on a forum... I was expecting some reliability issues when mine was new, so I started with FMJ RN bullets only. I got bored with that real quick... I had zero malfunctions. I started mixing my loads with round nose, hollow point, you name it and I stuck it in the magazine. Mine never missed a beat. I've got roughly 500 rounds through mine now and it is still absolutely 100%. Not one single malfunction of any type. Not only that, but I've found it to be totally suitable as a carry gun - as accurate as any other small pistol and just as easy to handle in my opinion. I use mine exactly as it came from the factory - no special grip sleeve, no extended magazine, etc. I bought it because it's small, and if I need something with a bigger magazine, I carry a bigger handgun. I made ONE change - I put a set of high quality low-profile sights on it, with a fiber optic front sight.
Another plus... mine has smoothed out considerably. I already liked the trigger as it came, but it has gotten much smoother with a higher round count. Unlike some other small handguns, I've found the Kahr pleasant enough to shoot that I routinely give it some range time. My Springfield XDs on the other hand, is not nearly as comfortable to shoot, and I had to put a Powder River spring kit in it to make the trigger even approach the feel of the standard Kahr trigger.
The mechanicals of the Kahr are fairly simple as well. When disassembled, you'll see exactly how the trigger mechanism engages the sear. This is one pistol where I put a tiny dab of grease (Slip2000 in my case) on the sear when reassembling. It stays in place nicely and I believe it contributes to the already-smooth action.