As far as I have learned, it's a solid coverstock that is slightly more aggressive than the solid on the Blue Vibe. That makes the Onyx a decent choice for a benchmark ball for a rev dominant or higher rev bowler. It is a very even reacting, control ball, that, with an average slightly strong drilling (4" - 4.5" pin distance), will handle medium oil.

"None are so blind as those who will not see."

I love this ball. It's amazing, especially on clean backends when most pearls will jump at the breakpoint. The Onyx is smooth and for me, it covers 75% of the house shots that I see.