Have a look at PC Power and Cooling. They hare very reliable and strong power supplies; Maximum PC has used them in basically every Dream Machine, and have never had one fail on them (minus the one an editor dropped on the floor! ) .
I'm not sure if they are Tri-SLI or ESA, but they are 83% efficient. I looked through Google, and came across this thread. I guess Tagan has a 1300 supply that will be ESA certified and tri-SLI compatible. EDIT: Found product here.
Woot! A system that will be able to handle Crysis in high-resolution in DX10 mode. What specs you looking at??? Processor, RAM...everything!! I'd definitely like to know...along with where you are getting the money!?!?
AJ