What? That's clearly FFX, looks like one of the roads away from Luca.
That's what I thought.
I've only played 7,8,9,10 (although in the order 8, 10, 9, 7 for some reason

)
7: amazing - great characters, great story, gameplay a tad easy. was absolutely engaging the whole way through. music is amazing. probably my favourite, but it's close...
8: very good - good characters, good story, GF junction system was great. solid game.
9: very good - some very memorable characters, good story, good item/magic system. difficult in places. some amazing scenes with fantastic music that you won't forget
10: OK - annoying as hell characters (teenagers!), good story, very very easy* Turn-based, good use of Aeons, character skill sets are a bit basic, lite on strategy
*except the optional "monster zoo" which requires you to grind levels and get all the rare items, or is otherwise impossible
Overall I'd say believe the hype, and try 7. If you can't get past the graphics, try 8 or 9. If you simply must have the best graphics, and voice acting, try 10, but be warned: if you aren't a teenager the dialogue will make you cringe!
Anything after 10... well... the new breed are nothing like the old breed.