I'm probably living to far away for entering the draw, but anyways:
Their support is hands down the best I have experienced.
After my 8800gt went boom with the bumpgate issue, I bought a 5850 after holding out with my old x1950xt for a year.(Sapphire) Was running a C2D on the Asus P5W DH Deluxe mb at the time. But couldn't make my 5850 work, tried first everything including switching psu,(bought a Coirsar hx620) and switching RAM. Mailed them, and got very rapid answer, and they really tried their best to help me out. In the end I had to return the card to the store, but their help was very nice. In the end after researching the issue over 2 weeks, I discovered that some ppl had the same issue with the same mb. Wasn't a problem with the gfx after all. Something about the PCiE slot not being able to deliver enough juice to the card.
Ordered a new mobo, P5Q Pro Turbo(Asus) and a new 5850, a MSi this time as it was the only card I could get hold of due to the epic backorder, and everything worked great.
Kudos to their support department for quick and good response though. Sorry you had to take the card back even if it wasn't defective..But who would have thought it was the mb when it worked with two 1950xt's, a 8800gts(borrowed) and a 6800gt(mine).