The final decision is dependent on the bowler and the conditions. But I wouldn't look at whether the coverstock is a pearl or hybrid as it used to be. In the past, solids would be early and arcing, pearls would be skid/snap and hybrids would be somewhere in between.
But now, companies are using whatever combination it takes to produce the desired results. I have seen skid/snap solids and early pearls. Look at what the manufacturer is trying to accomplish with the ball and make your decision on that, not what the cover is.
