Here's my dilemma ... For budgetary concerns (and so my fiancée doesn't kill me), I'm trying to keep the speaker purchase near $5K.
Jhkear
Go for broke and buy what you want now. If she kills you, you die a quick, painless death with great speakers, as opposed to the long slow death that's a side effect of marriage with lesser speakers. Married men don't actually live longer, it only seems that way. :)
Seriously, buy used, but I would only buy local so that I could audition, and also make sure that they are in proper condition (and save the shipping nightmares).
Cheers,
John