MSI Gaming 6G is the best all round card - It's quiet, custom PCB and I don't think anyone's really had a coil whine issue with it (going by this thread).
EVGA's cards are solid cheap choices, especially the SC+ at £530 at the moment - I'm not even sure on the difference between the SC+ and the Classified so I won't mention it. You also get their well renowned CS which I think everyone admits is the best going - Also the warranty follows the card with EVGA, rather than just sticking with the owner so it helps its resale value stay high.
I have a Strix at the moment and whilst I like it, I wouldn't say it's worth the £40-50 over a G1 Gaming (which is an absolute beast of a card, but you have a more-than-average chance of coil whine), or the SC+ for that matter.
As for the Hybrid cards, they're cool and quiet, so if those are your main concerns the EVGA or Inno3D hybrids are also great choices. Inno3D's warranty service is located in China though, so if you do get a problem with the card be prepared for long waits and expensive postage.
Hope it's helped.
I hope there's nothing wrong with that card, Razor! Hopefully you'll keep it for longer than a few days