Depending on your ball speed and revs, the Crisis can handle medium to light oil.  Its reaction is very smooth and reliable (strong arc), which makes it a good ball for spotty conditions, when your stronger equipment is playing tricks on you, and for late sets.

The coverstock is very adjustable.  Polished it will go long, dull it will start up early.  That's my experience with the Crisis.
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seadrive
Cogito ergo bowl