Best expansion pack based on it's world?

For me Sulani is the world that most feel like a real place. The festival seems less planned than SE or CL, and more natural, with family days at the beach, bonfires, bbq nights and potlucks. I also love that your neighbours will come to your house with extra food now and again. It also feel like the world you can move in most freely. You can go to the beach, or swim in the ocean and go to the food stalls or to the joint events all without a single loading screen. I found that when my sim lived there I used the travel interaction very little, only when there was a specific place to go or a specific reason. For the rest of it, my sim just moved freely around the world.

You do have some of that with CL as well but the city neighborhoods don't feel as natural to me, and there is less to do there unless there is a festival. The festivals themselves are fun, but not as intimate and homey as Sulanis more community feel arrangements.