more than likely ... (d)Other
I base my decision on how the ball responds to cover change more so than anything else. Here in NY, we rarely see floods (unless bowling in a tournament or Carolier Lanes) so how a ball reacts to med heavy and lighter is considered moreso. The above is my primary decision.
Seeing others throw a ball gives me a hint but really doesn't influence my purchase to a large degree.
My heightened and continuing understanding of the game as place more emphasis on other things besides the visual.
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Proud member of the Track Revolution
"He who knows little ... often repeats it!"