Best expansion pack based on it's world?

IL checks all the boxes, I think. It isn't just a pretty vacation world with interesting interactive spots, the neighborhood festivals and the pollution inherited from previous generations makes it a believable, dynamic place.

Runner up would be Eco Lifestyle, but I'd preferred it if they'd went with the same neighborhoods as GT: Harbour, Inner City and Rural. Of course we can pollute and clean our Henford or Windenburg, but when looking at just BG plus EL, not coming with a rural neighborhood is a bit of a missed opportunity.

I love the Eco lifestyle world.

CL for me. I'm on record about my love of apartments. They are quick and easy to refresh from save to save if you feel like it.

I can make a case for C&D, I really love the New England coastal village aesthetic. Willow Creek from BG is another I absolutely love because it reminds me so much of New Orleans, which is one of my favorite places here in the real world. At least that's the way I view it in my canon and how I build it.

You can almost feel the tropical breezes of Sulani, which is a great change of pace for the odd save here and there. Windenberg used to be higher on my list, but even though it's been passed by some of the worlds that have followed it, it still has appeal like Sulani to change up the same old same old routine. I do like Mt. Komorebi as a holiday home location w/LittleMsSams mod for that. I really enjoy the winter extreme sports activities. Not a world I would use everyday for my sims but a fun getaway.

I like it because it has a permanently snowy area as well as the lower changeable areas, it has skiing etc and the hiking.

In Mt.Komorebi you can swim and hike aside of winter sports. I don't think other worlds have anything that compares.

This one is too hard for me. There are a lot of worlds that I adore for different reasons. I couldn't pick between Cottage Living, Get Together, City Living and Snowy Escape.

It's hard to pick. My top two favorite worlds are Henford (Cottage Living) and Mt. Komorebi (Snowy Escape). I also like other worlds, but not as much as those two.

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.

Windenburg all the way.

All worlds have their good and bad parts but I feel like if i were to buy ep only for the world it would be Island Living

ofcourse Sulani still has its flaws to me like not having interactions with volcano and not having building in the center of village as actual building sims could at least shelter from storm in instead of you know running to the beach which feels not so logical