As you all know FF used the turn-based battle system until FFIV, which was the first game to introduce Active Time Battle. Although you didn't see the ATB meter in FFIV if you just stood around enemies would keep attacking you. This system continued from IV to IX, and then in the turn-based system was brought back in FFX. Personally I preferred ATB because it makes the battles seem more "real" in the sense that there is constant attacking and commands taking place between party members and enemies. Although some games were not as seamless as others (compare the agonisingly slow ATB in FFIX to the smooth integrated ATB of X-2).
When I played FFX I found it a little bit too much like chess...I could sit around deciding what to do forever while the enemy just parked off watching me until it's turn came. I could take this system in the old FF's I-III but somehow in X it just didn't feel the same. I was so relieved when ATB was brought back in X-2.
So anyway you guys just vote in the poll and post your opinion!
~:mog: