Most of the times, it's a good experience
What I can make out from the thread in Complain, is that the issue came with replacement model not in their inventory and for me that thread is pretty serious issue since I am buy a product which is in a legacy platform so after two years, I wonder what would be the warranty process and their response with it.
I have had far better experiences with Intel and warranty of their legacy products, so I was now wondering to leave OC ability and opt for the Intel model or should I go for the Gigabyte !!