Ok, so I'm upgrading my graphics card, likely to be either a gtx 260, 275, hd 4890, or a 5850. My current PSU is this: http://www.ebuyer.com/product/124922
and whilst shiney, I'm not sure I'd trust it to power a system any more serious than mine. I'll also be looking for the new PSU to power my next build which will be in 18 months - 2 years time.
I was thinking about getting this: http://www.scan.co.uk/Products/550w-...anty-see-specs
Corsair's PSU finder reckons that it would power pretty much any single card system even with an oc'd i7 + 2 hdds.
Does this seem like a reasonable choice (given that I'll won't be using crossfire/SLI), or should I be looking at something else? I wouldn't want to pay too much more if I can help it.