I would highly recommend Evansdale/Storybrook County from http://www.mysimrealty.com/
And Legacy Island III or Beach City https://www.thesims3.com/userExchange.html?persona=Rflong7&assetType=world
If you want something a bit darker Grey Meadow or Stoneshields https://www.thesims3.com/userExchange.html?persona=Quailhogs&assetType=world
I like these because they are some of the most complete and up to date. They look nice and play nice, compared to when I use EA worlds I don't feel the need to spend a bunch of time setting them up. :)