Buy quality and only buy once!
I carry in a non permissive environment (you can carry, but no one better notice) and after dealing with an off brand, plastic IWB holster, I stumbled on the Galco Silhouette. Holds my Kahr PM9 with nearly no noticeable weight on the belt and very concealable with only slightly more print than an IWB. Very comfortable, top quality leather with a beautiful finish. A holster that only gets better with use.