It's not really about like or dislike.
if i wouldn't like FFXIV i wouldn't play it at all XD.
i love FFXIV's soundtrack, coerthas & mor dhona music fit their zone just perfectly.
it's just the battle music that feels off in fights.
it's like i said before, the music is ahead of the fights, it's like listening to a uber piece of boss tune while fighting a little rat XD.

here is a piece from FFXI, personally my favorite because it was very fitting.
http://www.youtube.com/watch?v=joNTS...eature=related

everytime i entered a battlefield with this music i knew that something big is coming for me (and before endless nerf patches very tough >_<)

this is how it end up in FFXIV
http://www.youtube.com/watch?v=GmNbhhmLzRs

very good tune, but not very fitting the battle.
it's just my opinion tho.
probably it's really just FFXI that had my expections up high, but i still hope to get better fitting battle music in later expansions, especially for important story battles, like the promathia fight, or odin/alexander.
it's what makes a FF game better for me ^^