So far not only have I run Asus but I bought a board from them a couple years back that had issues, sent it in to be checked out and that same board is still running strong 4 years later. I also purchased a refurb Asus board (same make as the one that went into the shop) from newegg and had 0 problems with it until I sold it.
My dad is also running an Asus board and GPU in his computer I built him . The only thing I go back and forth on is Intel v. AMD. I like Intels performance but the pairing of AMD chips with ATI (now AMD) GPU's is pretty sweet.
So far I have stayed away from Nvidia.