I've tried all three, and all three will work, though the Uncle Mike's has a tendency to slip out of the pocket along with the gun if you don't draw a certain way. Robert Mika makes an excellent product - definitely worth a try, especially if you wear jackets or coats with big pockets.
My favorite, though, is the Nemesis, albeit modified. In the default form, it's way too tall for a J-frame, so you have to cut out 3/4" of material and then sew it up to contour to the shape of the gun. After that, though, you have pretty much the perfect pocket holster.