The best I can give you is my experience with 2 different Colossus's and a Pioneer.
The Pioneer is a fanmtastic ball for light oil, and provides the ability to get through the heads easily. Allowed me to play down the boards in a light/med and give some swing area in lighter patterns. Does not really like much carry down however.
I have had 2 Colossus's. The first was drilled for a more skid/snap. Although a ball I enjoyed, I chose to drill the 2nd with the "control" drilling. It provided me with much more versatility. I had played with different cover finishes on the 1st, and always came back to the box finish, or maybe a bit more polish.
The 2nd one...wow, box finish, nice even rolling ball, finishes hard, and very readable.
I am now looking to put a Mayhem in my arsenal for the "soup", which I rarely encounter.
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