Here is the rating give by BTM on the RSP.
Oily 9/8/9
Medium 8/9/7
Dry 4/4/3
Sport 7/6/5
Total Hook 49
I have an RSP myself and have it drilled 4x3 with a good polish on the cover and it is almost too strong for medium conditions. I think the ball will be great for heavier oil. This Ball is definately stronger than the Vision( I have this with the same drill on it).
Overall a great ball once you learn to control it....
--------------------
Todd Loy