I can't tell ya which mobo is "the best" but pick one that is able to pump alot of juice into the processor. Although I really love my Asus P5W DH Deluxe unfortunately its CPU core voltage maxes out at 1.7v which in turn gave me a max stable overclock of 3.6ghz on my Q6700. It's been running fine for about a year now on 1.7 but actual voltage is more like 1.66v. I would have loved to have a mobo with a little more ovehead to break that 4ghz barrier which I know is possible, just not with my (particular) mobo. I have my Q6700 watercooled with a Corsair H100 so temps even under load stay nice and cool. These 65nm quad cores seem to be able to take a lot of Vcore, or actually need it is the better term. Mine does everything I need it to do and having just upgraded to a 64bit OS I am really seeing the benifit from an overclocked quad core.
They really still hold their own in a very respectable fashion in 2014.