[fred cook]

I don't have a GP100 but do have it's slightly smaller cousin the Sp101. The first two things I did after getting it home was to replace the trigger and hammer springs with Wolff springs and to replace the grip with one a bit longer. Now it has a quite nice single action and double action trigger pull. Changing the springs is quite easy on the Ruger DA guns. I think you could get the same results with the Gp100 and spend less than $40 or so. If you like the stock grips, then make that less than $20! The only other thing I plan on doing is to replace the green front sight with an orange one. My eyes seem to pick up the orange better. If you plan on shooting heavy loads, then I would definitely get the Ruger instead of the Smith. It will take the extra punishment much better!