FFXIII is pretty much the only right answer, I hate the VII spin-offs as well, but at least they have some entertainment value even if the majority of it is silly DBZ style whoring out...

XIII had an interesting premise that doesn't go anywhere, a battle system that quite literally makes every battle feel the same, a pointless XP/Customization system, a terribly terribly implemented weapon upgrade system that is shot in the foot from the get go by the games awful economy setup, a cast of annoying misfits whose entire persona can be described as:

Lightning: I'm a badass and angry LIGHTNING SMASH!
Snow: I'm a Hero. I'll rescue Serah! I'm a Hero!! Serah wants us to save Cocoon! I'm a Hero!!!
Hope: *Whimper* I'll teach Snow a lesson! *whimper sob* Friendship is the BEST THING EVAH!!!!!
Sahz: Girl you crazy!! I miss my son... I'm getting too old for this trout...
Vanille: *giggle* Isn't thing fun? *giggle* It's all my fault... *giggle* *giggle* *orgasmic moan*
Fang: I love Vanille...?

Their drama is played so hard that it bypasses sympathy and goes straight into "you're trying to hard" like some needy ex-lover who desperately just wants attention of any kind, even if it's loathing.

It's world design is a massive road with pretty wallpaper and nothing else worth mentioning. There is no real exploration, no good customization, the battle system is sped up so fast that its difficult to even appreciate the pretty pyrotechnics, the battles themselves are artificially challenging cause all the enemy A.I. has to do is gang up on your main character to win, the same strategy needed to beat a random monster is the same to beat the games bosses, and for a game that was designed to "trim the fat" and remove unwanted elements from the "stale" RPG formula, I find it ironic that they kept the one thing most gamers universally hate which is grinding. This is all the post has to offer as you grind for overpriced miniscule stat increases, and save scum to get rare drops so you can actually get money and transformation items.

FFXIII isn't just a bad FF it's a terrible game in general. FFX and Crisis Core get an Honorable Runners Up award, but at least they are playable.