Matt
Bright Spark
Corsair was and still is good memory, and will make a great PC. But Corsair don't make their own memory, they buy chips from Nanya, Elpida, Samsung, Hynix, etc, and stick these on their PCB's. If you are unlucky enough to mix one version with another, problems start.
With Samsung, it's Samsung memory on Samsung PCB's - straight from Samsung. We've only just recently started offering it and have gone through almost 10,000 pieces, and have had about 3-4 fail, and they we're DOA. There's not much that can beat that.
Fair play, Samsung for me in the future then.