excellent cheers guys, I think i'm gonna go for:
http://www.overclockers.co.uk/acatalog/Enermax_Power_Supplies.html
Enermax Liberty 400W ELT400AWT ATX2.2 Modular SLI Compliant PSU (CA-026-EN),
I know it's only 400W but the more I think about it, the more my system isn't gonna be...