Can't be totally objective since I only played ff7-ffX-2

However I'll agree that ff7 is best...Who cares about the sucky graphics, actually I think it's part that made the game more appealing to me...
FF8 I liked alot as well(first FF for me...) and I DID enjoy the drawing system set up(Tho agreed it was a pain in the ass sometimes =/)
ffX was nice too.....loooveee blitzbal(stop looking at me with those weird eyes...I know I'm weird for liking blitzbal!)
FFx-2 was nice because it was so different...a bit girlish feeling...but still nice because it had this different way to play, which I digged(for 1 game...dont do it again

)
ff9 was okay, but way way WAY too easy....beat this game with one hand tied behind my back......so last place