Whoa, Kingdom of Heaven part 3 is on Omega, surprised they're still going with that 
I really, really need to play catch up with this band like I did with Ensiferum this year (caught up on the last 10 years of music). I own The Quantum Enigma but I don't think I've ever listened to it, and I only gave Requiem a couple spins. I'm on vacation next week - I think over the next 9 days I'll check out what I've been missing.
I'd say those are two of their more forgetable albums. Nothing really wrong with them, but they don't stand out to me. I would totally recommend The Holographic Principle though, I think that may be my favorite album of theirs now. Also, the acoustic versions they did for a few songs on that album are absolutely amazing.
Also, since I bumped this thread I saw my last post about seeing Epica back in January, sadly that has been their last show. That was sooo much fun that night.