I have both Spike's. I use them on THS and Sport Shots. There are both good balls, they both clear the fronts and mids and have a nice reaction on the backend. I would have to say the black/blue Spike is the stronger of the two. I feel the GTR III pearl coverstock complements the core better, it has more of a backend pop, and a few boards stronger. As far as dislikes I really don't have any with either!