I'm the opposite. I stopped being a gamer years ago, so I have no idea about any FF game since XII (which I thought should have been aborted). In case you're curious about the older games (and if not feel free to ignore this because retro games aren't for everyone), my opinions of the games are as follows:
FFI: I respect it for what it created, but you can't really play it today and enjoy it. Incredibly buggy and grindtastic. Some of the remakes are OK.
FFII: The original Famicom version is easily, without any shadow of a doubt, the worst FF game I've ever played. No battle system has ever been more crippled and broken. I actually played through the original about 15 years ago and I wanted to kill myself after it was done. The remake on the GBA is OK but holy hell does this game fail at life. Nasir Gebelli was a great game programmer but there's no way he seriously tested this ****.
FFIII: This was a MASSIVE, MASSIVE improvement on II. I wish this had been released in North America when it was new, I would have loved it as a kid. Very good game but definitely unforgiving, and the last dungeon is simply brutal if you're not leveled. DS remake was easier.
FFIV: Oh FFIV...I heart you. I simply adore this game. It's not the best game in the series but it is my favorite. My favorite characters, my favorite plot and in the case of the original Japanese version, challenging difficulty. One of the most emotional retro video games ever made.
FFV: I like the job system so I like this game. Some don't, but I do. It definitely has replay value.
FFVI: I'm torn here. It's up there with VII as arguably the best in the series but I think the second half of the game may be a bit too nonlinear. That said, it's one of the best video games of all time.
FFVII: It's both overrated and underrated at the same time, since it changed everything. I think it's a masterpiece, and that 6 and 7 are the best games in the series.
FFVIII: **** THIS GAME. Quistis is the only semi-interesting thing about this game.
FFIX: The last "retro" FF game. I liked it.
FFX: It may be a good game...but I hate it. I stopped playing FF games regularly after this.