I have a fairly new 3" SP101 and I have small/medium hands. I didn't like the looks of the stock grips, so I put on some Pachmayr Compacs with the backstrap covered (not Compac Pros). Both the stock grips and the Pachmayrs (both Compac and Compac pros) have the same problem as a lot of the "concealment" grips: they don't cover the space right behind the trigger guard, so your trigger finger occupies this space and sits high up on the trigger. The trigger curves forward as it goes down, so the higher your finger, the shorter the trigger reach. I found that these grips gave me a very "crowded" grip with a trigger reach that's too short. Also, the higher your trigger finger, the less leverage it has because it's closer to the pivot point on the trigger. That makes the already-heavy trigger feel even heavier and makes the gun not very fun to shoot and messes up my standard grip.
Possible solution: a grip that fills up the space behind the trigger guard, so that the trigger finger is lower where it has more leverage, a longer reach and a grip that isn't crowded. I haven't had a chance to try one yet, but all of the Hogue grips seem to be designed this way. Here's a photo of what I'm talking about:
As you can see, if the trigger finger is right behind the trigger guard, the trigger reach will be shorter (too short for me) and the pull will be harder. With this Hogue grip, the trigger finger is going to be lower, with a lighter-feeling pull. Again, I haven't tried these grips yet (I'm ordering some soon), but any grip that puts my finger right behind the trigger guard gives me a poor grip, too short of a reach and no leverage. And again, my hands are not big.
Of course, there's no free lunch, so the Hogues are going to be less concealable and because your hand is lower relative to the bore (compared to small grips), recoil control may be a bit tougher. But concealability and recoil are secondary factors to me compared to grip. If the grip isn't right, the gun isn't right.
