GT is not hard, it's just a pain in the @#!*% and makes everything take an unnecessary amount of time.
But I also like TFC, it's actually hard. It takes a long time, but that's because it's difficult.
GT is "hard" because it takes forever to do anything. TFC takes a long time to do stuff, but that's because it's difficult. It's this difference that makes GT a pain in the @#!*% and TFC actually fun. TFC has a much better balance between difficulty and time-sinks because it actually balances vanilla Minecraft around itself. GT feels like artificial difficulty because it tries to extend vanilla while ignoring the balance of it. It feels unnatural for stuff to require a million materials when I can make a piston with a single piece of iron and redstone dust.
</rant>
(Generic Disclaimer: Only my opinion, don't get too butt-hurt about it)
But seriously, I want a GT balanced around vanilla and not Greg's bizarre idea of "balance". Can I get a mod to do that, please?
Also, we already have the Holy Planks of Sengir, what more do you want?