I have a M-Tac and overall I'm happy with it. However If I was in the market for a holster for my everyday carry gun I would not hesitate to get the K&D Dakota Defender.
K&D Holsters | Custom Gun Leather and Shooting Accessories
The one thing I don't like about the M-tac is the kydex. It dose not offer the flexibility that I wish it had when carrying at 3:00. The Dakota Defender is all leather and it seems to me would offer more flexibility and comfort all the while costing $10.00 less.
Would I replace my M-tac right now? No, I am overall happy with it and the customer service from them is incredible. The K&D just seems like it would be a better fit for my build.