OWB goes to the BlackHawk Serpa for me.
My carry work goes to the IWB clip model from this company...
The Holster Store
This is the best $30.00 you'll ever spend. I've had mine now for about 2 years and it looks brand new. This outfit in Florida makes a holster every bit as good as the top brands, including Galco, Milt Sparks, Bianchi, you name it.
Their stitching is tops and the form and fit are excellent.
I was a little hesitant about the clip-style holster until I got this one. I've never had it come loose while drawing and reholstering is a one-hand operation. Excellent comfort too.
Those guys are worth buying a pistol just to fit their holsters.