Efficiency per uranium ingot is how I often make my final analysis of a system of reactors. Which is just your per isotope efficiency * 8. I like to think of it this way to account for how much energy my fuel supply can create.
IC2 average around 26m EU per ingot. Ignoring running costs or with say GT reflectors, you should hit maybe 50m.
Old gregtech was 90-140m per ingot.
I havn't looked at the new gregtech reactor stuff for a couple weeks.
Sounds like the new gregtech is maybe top end uranium numbers without the high running costs. Something in the 50 million per ingot range, but with some fuel usage scenarios not actually being much better than uranium.
Ignoring cost to build for a moment would you get more out of each ingot running plutonium+thorium or eff 7 iridium reflector quad uranium?
To be relevant plutonium+thorium should beat that usage scenario, but i don't think it does, which is why i left it off my personal 1.5.1 pack.