Depends on what kind of material you want the grip you get to be made of? Rubber? Rubber and wood? Wood? Hogue makes quality grips. All I can suggest is try and find a dealer or gun shop that stocks one of each of different models so you can at least see how it will fit your hand. If you call or email Hogue, they will send you a catalog.
Other then that, unless you can try it on for size so to speak, before you by it, you won't know if it will fit your hand for one and for 2 of you'll even like it.
The original wood one that came on my very first S&W model 66 combat (which I still have) was very comfortable and the checkering helped it to not slip when it got wet,damp or sweaty. I wanted someting else though and decided to switch it out for a combat style all wood grip, with finger grooves and no checkering only to find it got very slippery with sweat. I now have and have had for a while, a Pachmayr (which is another brand to consider) rubber grip with finger grooves and it has worked out great. It is all a matter of preference. But you have to know what's out there and available for your specific model and hopefully get to check it our before you buy it. Had I been able to do that with the wooden combat style one, I'd of saved about $60 bucks.
"No free man shall ever be debarred the use of arms" - Thomas Jefferson