jensm,
when I say complement, I mean something like this:
A ball that covers the same amount of boards on the same or similar condition, but has a different ball path. So if you use the Warrior on mediums and it's a strong drill with more of an angular attack, then complement that with the Thing and a smooth arcing drill. So, if the Warrior is say 3 3/8x 3 3/8, then do the the Thing at either 4x5 or 4 1/2x 2 1/2.
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JEFF