I've never cared for traditional skinny grips; they just feel too small. I always liked the Winn midsize as they didn't have much taper, but currently the CP2 Pro is my fave.
I go back and forth with driver grips. The larger ones feel better, but I've had great driving rounds with a standard size grip. Sometimes I feel like the smaller grips helps me release it better and other times I feel like I can't hang onto it lol.