The toughest part of Paul and Cathy Brustowicz’s decision to relocate from New Jersey to Summerville, South Carolina, was leaving behind their two grandchildren. The retirees also miss the theater and dinners in Manhattan. A big advantage of South Carolina, though, is “more house for the money,” Paul Brustowicz said. The couple also had a few old friends who were already living there, and the warm weather is nice, though it, too, involves a tradeoff: high summer humidity and hurricane season. As for amenities, it’s a quick drive to Charleston for dinner, the airport, and the Medical University of South Carolina. “Overall, it was the right move for us,” he said about the 2012 relocation. South Carolina ranked a very…