Thanks coyi1895, I did go with the Corsairs, wasn't able to find them online anywhere but a Microcenter near me had 2 of them left and I was able to get one. Truly amazing sound, and amazingly loud, OMG loud.
I'm wondering if I can do any better than the on-board audio of the MF7, I mean audiophile quality, looking to buy a pair of Sennheiser HD 800's in the future and want the best possible to push them. The external DAC and AMP's from ASUS seem to be discontinued.
I'm not totally happy with the on-board audio of the MF7, games it seems ok, music it tries to balance it out too much. You can hear a definite tonal pitch when someone is singing and someone is not in the song, it's like it's increasing the high end when the voice comes in, it won't remain flat.