No, I haven't. Honestly, every motherboard is going to get a lot of bad reviews that it probably doesn't deserve. Motherboards are difficult to create and when you buy a motherboard there's just a certain chance that you get a DOA board. Those people usually give one star because they're mad, but that's not really fair - sometimes you just get a bad board and you have to RMA it but it doesn't mean that all of those boards are bad. Newegg is great about RMAing boards. ASUS and ASRock have great customer service so I imagine they'll be good with RMAs. I personally think MSI customer service is horrible, and I don't know anything about Gigabyte.