I still say this nonsense about grouping FF games together is, well, nonsense.
I didn't really get into FFV so can't rate it, but FFVI, my favorite game ever.
The gameplay may be broken where some characters are completely overpowered and others are completely useless and some systems (evade!) may just not work but the story, characters, and music make up for all that.
10/10
Also, why Dancing Mad is the greatest boss music ever.
-edit-
From the above link, this does a nice job of starting to describe Kefka:
Power always comes at a price though, and for many villains, that price is often sanity. Okay, so Kefka was batshit to begin with, but in the first half of the game it was funny to watch him prance around in his mismatched motley circus costume … until he poisoned Doma. But then justice was served and he was put in jail, and it was funny to watch him pissed off, making empty threats at revenge … until he was released and massacred all those espers for their magicite at Thamasa and holy shit did he just kill General Leo?!
In short, Kefka seemed harmless at first, because for all his insane anger and curses, you thought that he was just another lackey of the Empire, and would either be defeated for good by your own hand, or the hand of his master if he got out of control. However, as the game continues, instead of making him less intimidating, his nuttiness makes him even scarier as his behavior becomes even more erratic and malevolent. This is all compounded in the World of Ruin where he spends his time using his ultimate power to pick off the lonely survivors for no other reason than he likes killing them. Some people argue that the best villains are ones that have sympathetic backstories, tragic heroes that made a mistake and fell from grace. Kefka is not sympathetic. He is not a tragic hero. He doesn’t care for any notion of honor, loyalty, or goodness. He’s a villain because it’s fun, and this movement takes a sharp turn into a sinister, disjointedly dissonant tune to signify the further descent into madness that ultimate power has brought him.