Check out the Ebonite Elements, and the Power Grooves by Brunswick - especially the Pearl Reactives, the Dry/R and the Urethane Groove, although the Pearls are pretty strong and can be itchy. I'd go for a drilling with pin under or slightly outside ring for a smooth reaction, MB at 135° for a smooth backend.
If still you can get one, also consider the Brunswick Proactive Plum Pearl, a very tame particle ball for medium-dry conditions. Never worked for me, but nicely controllable.
Another ball to consider is the Zone Classic Red Pin, a ZC with a very weak coverstock for dry lanes. I threw one for tests, and even though it did not really fit me it was impressive how easy to control this ball was on a torn-out 35' THS.
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DizzyFugu --- Reporting from Germany
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