Several years ago, I began visiting relatives who moved to Apex, N.C. It didn’t take many visits to realize Apex is something special. Walkability. New housing starts. Quaint retail. A robust park system. A historically preserved downtown. A noticeable amount of infill where, during a difficult past, many houses were torn down. So I did some digging. Sure enough, publications like Money magazine consistently rank Apex as one of the best places t…