People have already mentioned most of these around here, but here it goes:
- My favorite EA worlds would be Lucky Palms, Sunset Valley, and Isla Paradiso (the latter mainl because J love IP's gameplay). As for Lucky Palms and Sunset Valley, they're just awesome, well balanced worlds all around for any style of play.
- My favorite custom world by FAR is My Sim Realty's Evansdale County. It's an amazing world with really well decorated lots and everything I need for almost any style of play. The homes in it are also varied and amazing. The other reason I adore this world is that it offers many nightlife options and high rises without forcing you to use them all the time. I always hated elevators since they're so small and annoying so having bars, lounges, clubs, and the occasional high rise without having to live in them was a priority for me. Lastly, it's a really beautiful world, and it's not so large as to make getting around town a hassle. This is also my favorite world overall, I hope you'll give it a try! I can't recommend it highly enough. Other cool world's are any of My Sim Realty's or Rflong7's.