Depends on the conditions you face, and what you want it to do.
On a medium hose shot with dry outsides, I can use the Liberator in OOB surface. It turns on the dry and then lays off on the backend. I have an XXL (polished urethane), and that ball is a Liberator on crack! I have not had either ball very long, but I was floored with the snap of the XXL on the backend. Don't get me wrong...it's not like a polished reactive, but I had no clue urethane could boogie like that!
So...in answer to your question...I would throw the Liberator in OOB surface first, then polish as required.
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Jon (in Ohio)
Edited on 2/7/2008 10:21 AM