My personal favorite after buying no less than 10-12 different grips over the years, are the Pachmeyr Compacs. They make a "decelerator" that is a bit bigger (not good for pocket carry, but fine for belt carry) that covers the backstrap if you need the extra cushion. I do not and prefer the smaller grip personally.
The compacs do not have finger grooves and adapt to different hand sizes better due to that. Good luck in your search, the great thing about revolvers is you have no shortage of options as far as grips go. :-)
I do not love the bright sword for it's sharpness, nor the arrow for it's swiftness, nor the warrior for his glory. I love only that which they defend.