If you want to continue to use minimal wood that exposes both the frontstrap and backstrap I'd suggest the Tyler T Grip. I believe the smooth version would be best. I have a T Grip with fingergroove for my short Redhawk and I'm not at all happy with that setup. That fingergroove is not in the right spot. You can always have custom grips made that expose the backstrap but fill in behind the trigger guard. That's what I prefer for S&W revolvers. I also agree that narrow .265" triggers are best for DA shooting, and I prefer grooved triggers. I also believe that the pad of the trigger finger should contact the trigger, and NOT the crease. This is the method used by Miculek and McGivern, and they are the fastest and most accurate who ever lived. But you must properly condition both of your trigger fingers with lots of practice.

Dave Sinko