IMHO, Morich has produced with the S&A and the AF balls that have a very high skid/flip potential, if drilled properly.
Another ball that has some potential in this category is Ebonite's SR300, with a high RG and medium-low differential. Back end galore, given you have enough head oil to get the aggressive coverstock far enough down the lane...
Another, almost antique ball that comes to my mind is the Reaction Rip from Columbia. Polished pearl reactive coverstock, paired with a high RG and high differential. This thing has also a very good basis to deliver a late and flippy back end.
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DizzyFugu - Reporting from Germany
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