Best Final Fantasy side game/series?

[Illusion]

I was looking at the "Best FF game" thread and thought that it needed to be updated, so it occurred to me that perhaps we should discuss what the best side series or game is?

There are lots of games that have been released in recent years and although not all of them do justice to the Final Fantasy name, in my opinion, some of them have been great games. I'm a big fan of the Tactics games, I think they are very well done, but I can't make a fair comparison with other side games because the Tactics games are the only side series I have played.

I included a poll with this thread, but I'm prettys sure I missed quite a few games, so send me a message and may be I can edit the thread at a later time. I'll also give you the opportunity to vote for multiple games so that you can vote for your favorite games in order of preference; I think that works well for gauging how much one game is liked in comparison to another.


EDIT: I just realized there already is a thread about this topic...