Having had a couple of Bereta 21's, which themselves are "fat", I wouldnt even consider the Tomcats. The cracking issue just seals the deal. Both of those may be somewhat smaller guns, but they really aren't "small", and more like a hunk of 2x3 in your pocket.
I had a Kel Tec P32 when they first came out and had nothing but trouble with it. It had a nasty habit of not "letting off", no matter how hard you pulled on the trigger. Made the mistake of reaching up with my thumb and pulling back on the hammer a little, and when I tried that, it got my attention right quick, as thats what it needed, a little help. My thumb just didnt get out of the way quick enough.
There seemed to be a lot of rim lock complaints with them at the time too, although I never encountered that. I didnt keep it long enough after it going back to deal with the trigger to find out either. Just never trusted it after that.
Ive had a couple of different Kel Tecs over the years and while they have some cool ideas, theyve always come up short in the execution, and none were what Id consider a constant or regular use gun. More like a sit in the car or truck, etc type gun, for use in an emergency. And even then, I dont know if Id want to trust them for that.
The Seecamps are a tad heavy for their size, but they are built like a Swiss watch and do work. I cant ever remember having a stoppage with one of mine, but I really didnt shoot them like I do most other things either. They got shot regularly while I was carrying them though, and never had a problem. They point and shoot naturally too.
There is a spacer in the mags that tend to not allow most ball 32's to fit. Some do though, and most will if you remove the spacer. Ive shot a couple of different brands of ball with the spacer out, and the gun functioned fine.
At first, they were set up to run with Silvertips, but they now have an expanded list of ammo they do recommend. Mine were of the Silvertip era, and thats mostly what I use (and DAMN! have they got pricey!). I have tried a couple of the others, and they worked fine too.
They are pretty much a "built to the limit" gun in regards to getting them that small and functional. Because of that, they have some quirks, and you need to know about them. You have to have a mag in the gun when you pull the trigger or youll screw up the draw bar spring. I havent had it happen, but it must be enough of an issue they give you a spare when you buy the gun.
Not that youll shoot the gun with the mag out, as it locks the slide.
Take down can seem a little screwy until you get used to it too.
Size wise, other than maybe a Baby Browning, I really dont know of much smaller though, at least that small thats reliable.
Most of the others above are really too big for any kind of pocket gun. Ive had a couple of the CZ 50's/70's, and while well made, very heavy for their size. They shoot well, as long as you dont want to pull the DA trigger. Thats a two-finger ordeal and insanely heavy. SA is very nice and they do shoot well.
As was hinted at above, I think a lot of those guns were called pocket guns, in a much earlier era, when clothes and fashions were a good bit different.
The two Im always on the lookout for are a nice Colt 1908, and Remington Model 51. More just to have and not so much to use.
And just to give you an idea as to where Im at there as far as "use", Ive replaced my Seecamp's with Glock 26's for that backup use. I never carried either in a pocket anyway, and while the 26 is a chunk compared to the 32, its just as easily carried, in the same type of holster, and in the same spot. Just seems like a no brainer to me.