I think the Dark Aeons in FFX international were hard.

I think it's FFT. I also like FFVII and VIII thay have great characters.

and I think FFIII and VI wasn't bad at all.

There is no doubt.

Squall .VS. Tidus, it's just like an elephant .VS. an Ant.

According to Kingdom Hearts it's Tee-dus, but I played X way before that and always said Tide-us, plus I think that just sounds alot better.7CloudStrife7

well i never had a real difficulty in defeating a final fantasy boss, because I always concentrate on leveling up, but if I would choose, I would say the dark aeons in the final fantasy X international version.