Hi there,
I have a Hit Red Pearl and I have to say I don't get on with this ball. I got it for short oil and extreme dry lanes after seeing Jason Belmonte use it well in such conditions, but its not the ball for me. The RG is too high and the ball just tumbles down the lane really.
As for the cover, its weaker than Curyelon, definately. Ive got an original Hot Rod and Barbed Wire (also pro-glide) and the Hot Rod is a much stronger ball. Not sure how much of this is core related, but I think they are reasonably similar numbers internally (Barbed wire slightly higher diff, same RG).
Hope this helps. I personally wouldn't go for a Hit. Depending how you throw the ball, I would recommend one with slightly lower RG, such as the Barbed Wire or Big Hit..