I think most people are pretty happy with the P5Q deluxe and its always got great reviews, unfortunatly it seems you got a bit of a dud... its always a hard call deciding what to do while something is away for an RMA holiday... Thats how I ended up with my P5Q-D, my 680i started playing up and needed a checkup.
Personaly If I was you id just get a base P5Q or something 2nd hand to tide you over til your new hopfully fixed board comes back (hopefully quickly) as it wont be long before everyone is tempted by x58 boards and you may kick yourself for dropping $400 on another board just before they are out.