Which Sims expansion was your favourite?

In the past it was always Pets and Seasons because my sim self family could do the things my actual family did. My daughter could make the snowmen she would make each year. Pets so I could add the pets that we used to have. If we ever do get pets, I hope we could have all the right traits to make my cat Trouble. Man he was a picky little thing and real handful, but man do I miss that cat!!!