I think final fantasy is a good series, although they seem to be going downhill imo.
-6 i thought had a good story and was pretty fun, good characters, good world to play in. Magic wasnt too bad.
-7 (although its a wide opinion) was/is my favourite as the story is very in-depth and there is a great deal to the game. The characters are all pretty damn good (2 secret characters also), and even though some say the materia system is too 'basic' it is still a good system. The limit breaks and magic attacks all look very good, and even the enemies are cool. (Sephiroth is awesome) Although the graphics are poor, i'd try get this for Pc if u can as you can at least up the resolution which takes away a fair amount of 'blockyness' as god knows there is enough of it already in the game.
-8 Is also very good imo as it is much more realistic. The characters were all good and they are actually taller, and the graphics in general are less cartoony. The story for 8 is also very good as it is more of a political storyline. But not at all boring.
The draw/junction system is also very good and gives your characters a much much greater deal of versatility. Lots of secrets in this game and extra things to do. And even a card game 'Triple Triads' which is pretty fun.
-9 wasnt my favourite, the characters werent very likeable and the story was okay, but not at all too great, and the characters were also rather limited in their abilities (as in, certain people can use magic, and certain people can heal/summon etc). The graphics are again, more cartoony, but still, i'd say it's worth a test run. A lot of side quests, some not too great and the card game 'Tetra Masters'(i think) was shockingly bad imo.
-X & X-2. i dont know if u can download these but anyway...
-X did have a very good storyline that sortof took most people by surprise toward the end. The graphics are good and the characters are much more 'connectable', maybey due to the fact you can hear their emotions. The rest of the game is decent, but i would play it again purely for the story. Blitzball also had its moments (interactive sport minigame)
- X-2 i dont have much to say about this as i hate it. it is very girly and you have to work on a percentage of completed basis where you only get the final and best ending after gaining 100% and more which is very annoying to do. And the game only consists of 3 characters who soon become tiresome. And blitzball in this was more like a socer manager game which i found very weak indeed.
FFTA(final fantasy tactics advanced) was an okay game but isnt very 'addictive' as you soon find yourself bored with the same old system over and over (fighting). I soon found myself simply playing just to see the ending.
Final Fantasy is a good series, of course its a biased opinion, but i suggest giving it a shot and finding out for yourself. It is worth it.
-good luck
Good is good, but Evil is necessary