Re: Best GripsGo to your local golf store/pro shop and see what they keep in stock and give them a feel for yourself. If you don't already have a favorite, best thing to do is to try some out and find what you like.
If you play a bunch, keep the price in mind so if you want to change them next year you are not out too much money. Of course money might not be an issue. If you are only a casual player, get whatever you want because you probably won't change them again for a few years. That being said, a lot of the knock-off brands (Kelmac, Avon, Sharpro, etc.) are about half the price and are quality products, but they typically won't last as long.
I play with Golf Pride Tour Velvet and will change them every year. I wish I could play the Lamkin Dual Density Torsion Control but they cost way too much for me.