FFX-2 is a good game but will leave you feeling a little bruised because FFX is soooo good (although I hate Yuna, to be honest). If you get all the secret endings and find all the secret stuff to FFX-2, it's totally worth it. The song One Thousand Words and the scene that goes with it made me cry.

All in all, play it, but don't expect it to be better than FFX, except for the the way they fight (i expect an "amen" to that from LOBFCanti).

edit: oh yeah. it's not the best in ALL video games. nothing can make me cry like KH and it's prequels and sequels.