FFIV
+ The characters and the story
- The fake deaths

FFVI
+ The best story and the best vilain of the series
- We can't get Locke back quickly in the WoR xD

FFVII
+ Inside Cloud's Mind is one of the best FF part ever
- The music is not the best

FFVII: Crisis Core
+ Zack is amazing
- Too short

FFIX
+ The main themes and the characters
- When a character is not in your team for a while, they keep their old level so it's very hard to use them after that :/ (hi Freya)

FFX
+ The story and the music
- Seymour Flux is harder than all his other forms and it's not even the last one

FFX-2
+ The main plot
- The sidequests in general

FFXIII
+ The music
- Gran Pulse is too long

FFXIII-2
+ The time traveling thing
- Being obligated to do again some of the longest dungeons (ie. Academia 500 AF) to complete the game

FFXIII: Lightning Returns
+ The story
- The time