I compiled a list of the top-rated Final Fantasy titles, voted by our users over the last few months.
http://www.thefinalfantasy.com/games/topgames.html
Remember this is opinionated... and I'm sure some people's trees will get shaked. But remember, this is the general consensus of many FF fans that have taken the time to vote for these games, so it is some-what accurate.
We can always guess what the top 3 titles are usually (FF7, 10, and 6)... which I agree were the 'stand-out' titles of the series. 6 opened the door to mainstream, 7 exploded the series to heavy commercialism, and 10 was a success as well. I may not concur with these top 3, but from a distant scope I can... Personally, my top 3 were IV, VI, and VII, but I'm old skool.
Anyways, it is fun to check out. I'll be adding the titles after the top 10 soon, so we will have a MASTER list. Please enjoy!