Dunno, I love them both, but 4 and 5 are just masterpieces compared to the rest of the saga. I'm playing for the first time FFXII and I'm enjoying it, but it's missing something, can't explain what it is but I feel like playing a Final Fantasy Tactics instead of a real FF saga member.
They say FFX is the best since FFVII, gotta check it out ASAP to see if that's true