I use the Bantam model. They are quite nice. They fit good and tight and fill up the hand better than the factory wood panels. The back is still open though, so not much for recoil cusioning.
I tried their plain Monogrip model too, before I got this one and wasnt too impressed. It had a weird screw tensioner on the bottom. Not just a friction fit like the one I have now. It was loose and hollow feeling.
Not sure if it is the same one you have there or not.
note: mine is a sqaure butt redhawk.