I thought the story to X was excellent, tbh. That's why I loved it. I also loved the battle system being more tactical and turn-based rather than quick action like VIII, XII, and to an extent VII.
Tbh, I think VII was incredibly overrated. I liked it, but the story line just wasn't that engrossing.
Also, Seymour was a better and less bitchier villain than Sephiroth.
edit: also, Tidus looked like a chick, but that's just the Japanese. He didn't act like a chick... Vaan... now that guy was a little bitch.