Holy Cow, there's a lot of great suggestions in here. Let me address some of the questions asked:
You could just put a Talon grip over the CM9.
Yes, I could, and I put a houge handall jr grip on my cm9 when I had it the first time. My problem was the grip started moving around on me, and I didn't feel like I had a sure grip. In addition, I would rather try to find something that works well for me as it was designed, rather than something I can get and then add to it to make it work well. Just a preference for this gun, if I can.
The Kahr CM9 is probably one of my favorite subcompact 9mms, and I'd also suggest Talon Grips (or a bike inner tube) if you hated the cheese grater grip. I had a CW45 and it didn't bother me, but my wife was not a fan at all.
See my comment above on the Talon grips/inner tube preference.
I had a CW9, and the grip is much less aggressive, but I'm a little, dare I say it, gun shy after the front sight came off the gun 2 times in a month.
I voted for Kahr because that's the only one of those listed that I have fired but I don't remember which model it was. It was all-steel, though. I like the double-action only feature. But for what it's worth, I don't own a pistol that meets the criteria. So I guess that says something.
I think the only Kahr pistols made in steel were the K and the MK series, which is one of my poll options, unless it was an older model I have never heard of, which is also possible.
Have you tried a Ruger SR9?
Yeah, it's a double stack, but it's about the same thickness as a lot of single stacks.
Or maybe a good ole' High Power - very slim.
I have the doube stack CC pistol covered- CZ 75BD and CZ 75 PCR- but thanks for the suggestion.
Nice suggestion, but a little more than I wanna pay, since the cheapest one I can find is $550 from a private individual plus shipping, plus transfer. Nice looking piece, though.
I find the XDS to be a very handy belt gun, with the extended magazine.
AFAIK, all the Sccy guns are double stack, clones/developments of the Kel Tec P11.
You're right, I goofed with the Sccy addition. I wasn't at my best, especially since I forgot the dad blasted G43 in the list.