I am starting to really love kydex, it all started when I got my cheap ($40) FIST IWB for my Glock 27this February/March. I immediately noticed how it was head and shoulders above the other holsters I had for my other guns, and I noticed how it, despite its ugliness, was very quick to draw and reholster, and also retained the gun better than my other holsters.
Now I have a Com-Tac M.T.A.C. that came in the mail not too long ago, and it is impressing me with how overwhelmingly brilliant it is. I bought it for a USP 40, and it also fits my FNP9-m and CZ 40B just about perfectly, though sometimes the CZ has a weird tendency to hang up when drawing. FNP is a perfect fit though. I also have another pair of FIST holsters on the way, a pocket holster for the Glock and a much higher level of kydex IWB with a bunch of accessories and attachments for my CZ PCR.
I just like the way Kydex holds them in, how easy and quick both the draw and reholster are, and how it feels easier on the finish than the tight leather holsters I have tried are.