I carry a Colt Defender in a Milt Sparks VMII every day to work, summer or winter. It's not the lightest carry gun, but it's small, I've never been noticed (at least not that anyone said anything), and it's freaky accurate with plenty of stopping power. I'm also a bit on the large side, and I'm not sure if it would translate well to thinner folks; I bought my boss a PM9 to use as his daily carry, and we ended up settling on a Crossbreed Supertuck for his holster which suits him well, keeps it very concealed even on his very small frame. He also has an LCP with a Crossbreed. Between the 2, the PM9 gives me a much more secure feeling, the LCP is just unbelievably light, but does put shots on target easily at 20'. I will likely pick up an LCP for weekend carry at some point with a pocket holster, but the Colt will be my daily to work for the forseeable future (though I am starting to rotate my Wesson CBOB into the mix now that it's broken in a bit more). If you choose the Kahr, be aware it's going to take 500-1000 rounds to break it in, that sucker is tight as a drum when it's new and we ran into stovepipes, ftrtb and numerous other issues during the first 500 rounds of break in. Of course, ymmv on everything