This is also a PSU worth considering, some people will not recomend it as few have had problems with its reliability, but
imho its a small minority and you have nothing to worry about its a great psu but not in stock at the mo'.
http://www.scan.co.uk/Products/Produ...oductID=386404
try it on Ebuyer and you can get £10 off with google checkout:
http://www.ebuyer.com/UK/product/109552
But personally, i would really push your buget as the PSU is one of the most important pieces inside of your PC. I would go for this if i were you. Best PSU's for your bracket of power on the market. Got one myself and i love it:
http://www.ebuyer.com/UK/product/109552