I remeber watching one of Direwolf20's server lp's a few weeks ago, with RichardG complaining about CASUC's in general -- apparently they have been the bane of the IC2 team for a while. But I can understand why the CASUC nerf was was done -- a CASUC reactor can supply much more power than any other form of power generation, at a far lower cost. A well-made, 6-chamber casuc can output 2200+ Eu/t at a cost of less than 200 iron ingots, or a mere 25 machine blocks; even geothermal generators with their relatively mighty 20 eu/t don't even come close to that amount of power output.
Get your facts right pls a 6 chamber reactor alone costs 184 iron ignots already then you still have to make the whole CASUC system and iam pretty sure thats gonna cost alot more than just 16 ignots.
The max output with buckets is 2020 eu/tick because you have to have some free space for the buckets. With ice you can go higher but you also lose eu because you have to make ice unless you are using EE cheat.