+1 for Comp-Tac. I've got a drawer full of holsters. It is the best one I have tried so far. I am wearing it now with my Shield 9mm. All day, every day no issues. It's modular too, meaning you can switch out the kydex piece so that you can use the holster for multiple pistols. I switch back and forth between my Glocks and the Shield with a few turns of an Allen wrench.I'm a huge fan of the comp-tac mtac. It's very adjustable for cant, depth, retention, and there's a nice variety of clips for your preferred carry method. You can also purchase additional spare bodies if you decided to change up your EDC. I like it a lot better than my crossbreed.
I carry mine in a hooch holster iwb. Have been for a few months now and im extremely happy with it. I have used several of his holsters now and never a single issue.
Hooch Holsters - INGunOwners
I recommend the Stealth Defense Strut Holster for great concealment and comfort. Its the only one of it's kind. They have a video that explains how it works.