The choice of grip and the number of grips to be put on a bat comes down to personal comfort. GM shock absorba is good. I particularly like the SS snake grips too--- the one they have on their Matrix for example. It is quite nice and not that thin as well.
@qaiser: the handle of your particular bat is not that thick. When I had a CA, I used two grips on it. I knew a terrific batter in my league who used just one grip. So it ultimately comes down to personal choice. Ask yourself what YOU are more comfortable with; eg. if you are a very wristy batsman you might want to go with a thinner grip style