Have you played 4? I think it's almost as good as 6.
I think 6 is the best JRPG ever, because it was the best JRPG during the golden age of JRPGs, and I have no interest in playing dozens of crappy games to try to prove myself wrong, so it will be my favorite forever. I don't play RPGs anymore because they've been perfected with FF6.
But if you haven't played 4 yet, I recommend it.