My regular go-to's still tend to be Brindleton Bay, Oasis Springs, Willow Creek, and Windenburg because they're big with enough lots to make them fully self-contained worlds for many of my households to live and play.
Following those, I also love:
- Sulani for its fully accessable oceans, beaches, and beautiful beachfront lots.
- Strangerville for its grungy nomad red desert surroundings.
- Henford-On-Bagley for its isolated country lots, small hamlet town, and its British/Cotswolds influences.
- Forgotten Hollow for its dark, spooky, Victorian atmosphere (even though its way way way too small for a true, full gameplay experience).