Leather - Was using Rafter S leather company until recently and now they've stopped responding to emails or delivering holsters. I'm considering going with the aforementioned DM Bullard, who is a heck of a nice guy, I've met him a couple of times at the Dallas Market Hall Gunshow.
Kydex - Comp-Tac, Comp-Tac, Comp-Tac. Awesome customer service, awesome bunch of guys.
-Rob