Just thought I'd note that with EE, it takes 512 cobble iirc to make 1 diamond.
In IC2, using a recycler, you need 9 UUM, which is 9 scrap x 9 for one UUM. Because the average on a recycler is about 20%, you go ~405 cobble -> 81 scrap -> 9 UUM -> 1 diamond. So you actually need less cobble in IC2 than in EE to make 1 diamond. Although you have to add in the power requirement for all that scrap, it's still noteworthy. I do agree however, that the mass converters and stuff in EE are a little overpowered. I easily 'completed' EE in about 5 hours by doing a little mining, then AFKing using the upgrading machines. Felt like I might as well have been using TMI after a while.