Hi RTH
Over the past two (2) years, I used a ASUS P8Z68 Deluxe/Gen3 Motherboard and the one above that (P3-Z68 V-Pro) as well. Unfortunately, both my boards went the same as yours so, I'm thinking of a Gigabyte Assassin as a replacement. My system mimics yours almost with the addition of a Full GoFlight Commercial kit, a TripleHead2Go box and ToughPower 1500W. My tech friend says Gigabyte are better than Asus and based on my experience, at least, I'm not fussed about buying any more Asus boards.
RR