Favorite expansion pack?

I think I would have to say City Living - I LOVE San Myshuno, probably one of my favourite worlds in the game! I love the idea of apartments and penthouses, and how this is so much different to the other worlds. I love most of the items and build/buy stuff the expansion pack added. Second would be either Cats & Dogs or Seasons. I don't really know about Get Together - I'm not sure what this added but I think it added clubs (and maybe aliens)?? I don't really use clubs (I've only made one club and never really bothered with it) but I've just read through this post and if it added community lots then this and City Living are my top two faves!