3913 for sure. I carry it quite often in a Crossbreed Supertuck. It fits into a nice niche between a 642 carried in the pocket, and a P220 carried under a coat or jacket. It's the perfect "shorts/jeans and a T-shirt" gun.

I'll probably snag a 3953 eventually for S***s & Giggles, and a 6906 for those times when I can get away with more than the 3913, but can't quite manage the P220 (i.e. untucked polo or button-down shirt).