I play pro clubs, but it's just too annoying and way too easy for complete noobs to win games. My club is 5* and top 5000 at the moment, but we stopped playing. I play as ANY and my mate usually plays striker, but we get dicked on by EA boosting crap teams and nerfing our players, especially when it comes to playing 1* teams. I think we've won something like 170 games and lost about 30, but I can tell you not a single one of those losses were heavy defeats, all of them were last minute winners.
To put that into perspective in FIFA 10 using the same people we were 7th in the world and went on a 68 game win streak until it was ruined by a disconnect, since then they have tried to make it easier for people who suck at the game, they need to remove the defensive assists and force people to use an ANY in clubs.
I actually think Ultimate Team is the best mode, it's more enjoyable because you get a stat boost and speed boost in comparison to the other modes. So you get a faster game with more goals and slightly less EA scripting bullcrap.