Another vote here for Midnight or Indigo, with Chartreuse as a runner-up.
I'm biased towards Riverview myself (my personal favorite, plus there's a lot of room to place extra lots), but if not there then Starlight Shores or Lunar Lakes would be cool because I don't have either town yet and they sound the most intriguing to me - therefore, I can live vicariously through your posts as what I want to see is the only thing that matters, right? Right?!?