I have two of Steve's holsters. So awesome. One is a 2 layer competition kydex holster. The other is single layer IWB for a G43 with TLR6.
These are not the cheapest option. He spends a lot of time and it shows. He's got a huge kydex selection and has a good eye for shape and colors.
Really love these holsters so much. And, he's a stand up guy.
I have also had Rantingredneck make a knife sheath and he did a nice repair on a RHT holster (owner sucks) that was unusable, and he improved it immensely. The knife sheath is great. Exactly what I wanted. I've also seen many that he has made for shooting friends of mine, and they are all very nice and perform very well.
RR is also a standup guy.
Chief Jason made me an affordable hybrid OWB pancake style for a CZ75. It was affordable and did everything it needed to do, and did it well.. Haven't met CJ in person, but plenty have and you'll find universally positive reviews.
Haven't personally seen any kydex from gunbelt (only leather), but everything he does is done right, so I wouldn't hesitate to purchase a kydex holster from him.
Also, I've had very good products from IBX Tactical. They make great holsters.
Can't go wrong with any of these guys.
Just my opinions.