Best place to spiritbind? Best gear?

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I dont get what you mean, but a friend and me were binding 2 sets of 11 ~ilvl 49 items each: he without spiritbond increase and I'd a binding potion with rate +3.
While I made 199% with my sets he ended up with 197%. we both reached 200% at the same pull, so in the end I wasnt faster, even with spiritbind increase, which makes it completely useless