I replaced my original Hogue grips on my Redhawk 4" with a pair of these.
I got them from "Numrich".
A bit of a pain to get them delivered all the way out here, but well worth it.
I have found them to be a splendid replacement. Cheap, but far from a cheap feel. The rubber feels firm, yet has some nice give in them. The fit is great. No gaps, no uneven joins etc...
As for the comfort, they are a definite step up. For a start, given that I don't have spades for hands, holding the gun is much more comfortable. I feel more in control of the RH with those on.
Heartily recommmended!