The Hawg would probably be the best on heavier oil, better than the Zilla, BUT the Hawg Zilla is a very strong ball. The Hawg is particle, and all particles are better on oil than a reactive (like the Zilla). From what i've seen, you can't go wrong with either one. Hope this helps!
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BrIan Track LegionInertia,
EQuation ,
DEsert HeAthttp://trackbowling.com/ "Track...you Just can't Beat That!"