Yeah, gregtech has its merits.
Especially making the mass fabricator much less OP. I can place some upgraded solars next to it and have all the UU matter I will ever need. The matter fabricator seems to solve this, my only gripe being that it requires so much iridium to get off the ground. If it required a bit less iridium I would be all for it.
We have a matter fab hooked up to a network of geo gens, nuclear reactor, and 2 ultimate hybrid solars. We're using the uu to make titanium ingots atm. We'd be nowhere near this stage if it wasn't for a dense ores age. However, when we do start with the ultimate/dw20 pack, we plan to disable dense ores and increase iridium ore generation. I think, by default, it is set to appear once in every five chunks...we might increase this to one in 3.
But we're having to mass quarry just to find enough rubies for chrome ingots. We've been playing for about 2 weeks (few hours day), and i only just made the gravichestplate yesterday. On tekkit, i would have been flying around with stacks of rm by the end of my first day. Why people would want mods to gift them items without the effort is beyond. Whiners can always go back to tekkit and ee2!