I'd say that D3 is probably going to be a distraction for everyone for at least the next week, and I haven't played Minecraft at all since the last update so it'd be nice to see the new stuff added in vanilla as well as this Tekkit stuff. So, I vote waiting.
But, I'm one amongst many, so this is just my vote.
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**R.O.B.A.Z.O.I.D**