Are you going schizoid on us bullski? You ain't supposed to answer your own questions, brudder. <Only if it's the best answer does it count.>

So you're thinking of going PCI-e, huh? Do you have the SATA hard drives and proper ram to go with it and a 700 watt + to help run that vid card? Those new vid cards suck major juice and if you're getting a new PSU, it might be an idea to stick with the single rail system.
From PC Power and Cooling info on single vs multi rail PSUs:
"With all the hype about multiple 12-volt rails (ads claim that two
rails is better than one, five is better than four, etc.), you?d think
it was a better design. Unfortunately, it?s not!
Here are the facts: A large, single 12-volt rail (without a 240VA limit)
can transfer 100% of the 12-volt output from the PSU to the computer,
while a multi-rail 12-volt design has distribution losses of up to 30%
of the power supply's rating. Those losses occur because power literally
gets "trapped" on under-utilized rails. For example, if the 12-volt rail
that powers the CPU is rated for 17 amps and the CPU only uses 7A, the
remaining 10A is unusable, since it is isolated from the rest of the system.
Since the maximum current from any one 12-volt rail of a multiple-rail
PSU is limited to 20 amps (240VA / 12 volts = 20 amps), PCs with
high-performance components that draw over 20 amps from the same rail
are subject to over-current shutdowns. With power requirements for
multiple processors and graphics cards continuing to grow, the
multiple-rail design, with its 240VA limit per rail, is basically obsolete."