Low crime, reasonable commute, and good schools—who says you can't find a nice house in a suburb without paying a fortune? Buying your first house? Fleeing the city for a life within your means? Here's a novel idea: Move to a suburb where you won't break the bank or get your car broken into. A community with reasonable home prices and decent schools. A suburb close to your city job, with a lively downtown of its own. For hedge-fund managers, plastic surgeons, corporate lawyers, and other people who earn millions a year, choosing a suburb is not about affordability but...