Bye Subject Ren.
Subject Mudkip, actually no. For X you have a lot of things to do, like the Arena, which takes and long time and some of those quests were seemingly impossible, see last monster in Arena and it's harder in the International version. XII is one of my personal favorites because it seemed to have an endless amount of side quests that took the difficultly from "near impossible" to "you're out of your f**cking mind to say I could beat that". Trust me on this, I'm on Yamizat!
Subject Sass, I know you liked it a lot. And no I'm not reading Al Behd! Mainly because it's been a long time since I played X, or any JRPG for that matter, and can't remember.