So many people carry a .45 or a big 9mm for awhile, but then they end up REALLY carrying a little S&W revolver. I carry an Airweight (best combination of comfort and value), but could just as easily have chosen any steel frame 5 shot revolver (almost as easy to carry and certainly easier to shoot well).
As for the laser grips, OH YEAH!
If you have the money, you should buy them. Why? They don't hurt you at all, and have some powerful advantages: potentially better shot placement, especially on longer shots, ability to focus on the target, better understanding of trigger control and more.
I suggest you go to a BIG old gun store, handle everything from S&W, Ruger and Taurus, then buy what feel best. If you are recoil sensitive, rent some guns before you buy and see if, and how much, they hurt your hands.
Oh, oh, better idea!
Buy an Airweight 637 J-frame as a backup to your steel framed model 60 Smith! Put a little laser on the light one and a big laser on the heavy one. After all, you never know when you might stop by the range and need a gun for a friend to shoot!