cheers, been happily running for 10 hours now, I'm tempted tomorrow morning to go back to the EZCool PSU and see what happens.
I may order
Corsair 600W CX PSU - 2x PCI-E 6x SATA
http://www.ebuyer.com/product/241000
or
OCZ Stealth Xstream II 600W PSU - 3x SATA 2x PCI-E
http://www.ebuyer.com/product/204353
I think either of those should fit the bill
both are around £55 most places I've looked
Cheers
Al