For the first time since the 1920s, 27 of the nation’s 51 cities outpaced their suburban counterparts in growth– a result of shifting attitudes about urban life and a housing downturn that has made moving more daunting.  The changing urban attitudes go along with falling crime rates, growing cultural amenities, and fewer factories.  Cities also provide the convenience of ‘walkability’ to shops, entertainment, transit, and even work.  Even developers are picking up on this trend, putting more time into cultivating city dwellings than suburban homes.  Some experts believe, however, that once the market recovers suburbs will be on top again.