1-2. 2010 World Cup / 11 (on 360). Undecided there - I like the gameplay better in 11, but everything else is better in the World Cup edition. These two are the fifas i still play and even found a way to update the squads on 360 recently, very exciting, especially while the World Cup was going on.
3. 2002 World Cup - my first fifa

- that game seemed magical at the time!
4. 13 - the 12 was like a beta 13, shouldn't have been released. I tried the demo and was very-very skeptical about the tactical defending crap, but in 13 once i got used to it, it worked. But that game was really fun at the time due to all those cool little things that they implemented that were tied to the online component. Now that the servers are off and the 2012/13 season is long history, it's useless.
5. 2014 World Cup - the last decent fifa. At the time I liked it a lot better than the 2010 edition, but somehow they aged very differently. Online component is probably to blame here, too.
6. 2005 (Xbox)- now it seems shitty especially compared to contemporary Winning Elevens, but for me back then that game was amazing. Huge stride compared to 2004, let alone 2002.
7. 2008/2009 (PS2) - didn't play them for too long, but I liked both and they stood out to me as the same exact game, just one number switched, but a noticeable improvement on 07. After that, 11 on 360 totally blew my mind.
The rest just sucked. Or I didn't play them, like 2003, 2006, 2014, 15, 19, 20, 21, 23. But the 2014 edition for PS4 is on my bucket list, everyone praises it so much.