Sims 3 expansion pack? Which one is best?

Alright well it depends on what you like. For me I enjoy Generations most beacause I enjoy families. But if you like partying late at night and celebirtys than Late Night is good. And if you enjoy careers where you actually go out and do stuff and not go into a rabbit hole then go with Ambitions. And lastly if you enjoy preforming like singing or being a magician or acrobat then Showtime is for you.

I would either get showtime or ambitions. Both of these give your sims more exciting jobs where you can watch your sims work instead of just looking at a empty building. Showtime gives you the singer, acrobat, and magician. For more info on both Showtime and Ambitions, i put some sites in the sources box. Hope this helps.