Both of those mobo's are first class set-ups !! I would prefer the premium if I had the available $$$$ (the heat pipe is a big protecter of the North Bridge chipset)
Make sure you choose at least a 600 watt Enermax SLI ready PSU to avoid the pitfalls most SLI buyers run into / fully configured those rigs really demand VERY stable consistent juice !! You may also want to check out the PC Power & Cooling brand another VERY high quality PSU
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