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Hmmm, seriously toying with the idea of the HIS 7950 now.
Like most people I do think the 79xx series is overpriced, but will be getting fairly similar performance in most cases (yes, when OCed) but would be able to go single card again, and with probably no money paid out in the end.
Though did want to go Nvidia this time round...
According to that warranty thread, HIS rma is handled by OcUK - only reason was toying with the idea.