Oddly enough, each brand seems to have its own "HOLY GRAIL" of bowling balls.
With Brunswick, it is/was the GOLD Rhino pro. With Ebonite, it is/was the Vortex II(V2). And, with Storm, it appears that the Tour Power has taken that place.
These balls were famed for their consistency and predictability.
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Signature?
We don't NEED no stinking signture!_______________________________________________________________________