What psu for 8800 or cf

[filbert]

I'm looking for a new psu, but there's to many to choose from.
I have a x1950pro now but I will get a 8800 series or crossfire two x1950's.
Ati recommend a psu with only 1 12v rail but most good psu's seem to have multi rails.
I'm a bit lost as to the best to get, cost is an issue max £100, scan have some on "today only" but again to many for me to pick one out.

Thanks.

[-N!CK-]

corsair psu's are excellent, 620 proabably best for you

[filbert]

That's one I've looked at, scan don't have any in stock, what are the HiperPower psu's like, ok?
They are one level higher in the Nvidia ranking, but have 4 12v rails so not sure with Ati cards.

Thanks.