Hi there,
 
I'm building a gaming system with 2x HD4870 crossfire + E8400 + 2x 500Gbb HDD + X48.... I wanted to get Antec TruePower Quattro 850W but it got £15 more expensive so I'd like to consider other options.  
 
Can you list good PSU for reasonable price and quality, that would handle my system ? thanks a lot!

I got OCZ 600W GameXStream that can take 2.  
 
Mainly anything above 600W can take dual...but need a good make, and 12V rail.
 
Corsair make some of the best PSUs

It's good to hear that I don't need that powerfull PSU.  
 
any other opinions?

comme on, some advice!

http://www.newegg.com/Product/Prod [...] 6817341002
 
That will handle your system fine. Its the same as Kxk's except 100 watts more.

that's no going to handle my system at all. I need 4 x 6-pin PCI-E  to handle two HD4870 .

http://www.newegg.com/Product/Prod [...] 6817139006
 
750 watts, strong 12v rail, and 4 6+2 pci-e pins.
 
excellent PSU, and only 100 bucks after mail in rebate.

thank you, that looks much better!  
 
any more quality suitable powersupplies?

You dont need 4 X 6 pin ....why does everyone think this... just use adapters for the other 2 6 pins they work fine.