For IWB , I really like Concealment solutions they have a good product great service , crossbreed , comptach minotuar are similar products . These are a flap of leather that goes up against your body with a kydex part that anchors the gun.
OWB , tons of options but most of it depends in what you want from a holster ?
Buy quality mid range holsters and you will be happy . Also get the notion out of your head that you only need one holster.
Different seasons , different activities call for different types of holsters