By Jon Sharp G rips come in various shapes, sizes, textures, and colors. Bigger grips for bigger hands, and smaller grips for smaller hands.
Some grips are hard rubber, some are soft, and some are dual density.
Simple, opinions differ. However, Oury only makes one style, the Ouray ATB Grips, but they do have 11 different colors. The texture is a series of raised blocks similar to a reversed waffle pattern. The grip is a little thicker than other grips, and it is definitely made for trigger shifters. I really appreciated the stickiness of the rubber.