Has anybody tried any Fairy Pokemon?

[Jaywood2010]

I am trying to fill my 6th slot in my party and I'm debating on 3 pokemon.  Two which are Fairy which is appealing to me.  Other is ice which i like.

Gardevoir
Dedenne
Aurorus

I really like Dedenne but I have no idea if he is any good.  Has anybody tried him?  He looks weak but I could be wrong.  

Also how is Aurorus?  He looks slow so that worries me.

Gardevoir seem like the best of the three all around or is the other two good?