Five isn't my favourite, but it has some good ideas. The Job System was a little overdone, in my opinion. So many different classes that they became less distinct. If there were ten or so radically different jobs, then it would've been more interesting for me, rather than the huge number of jobs.

However, the plot's reasonably gripping, especially the back-story about (SPOILER)Enuo and the splitting of the world. Also, having an airship and submarine is always cool.

FFV also has Galuf, and tough old guys are great.