I also live in Charleston and go to Savannah a couple weekends a year because it really is a cool place. But when it comes to living in a place I would far prefer to live in Charleston. The actual grid plan of Savannah's historic district is superior to Charleston's street plan and I don't think Savannah ever had a building height limit so the taller buildings make Savannah feel more 'urban', but when it comes to jobs and all around momentum Savannah has very little; If there was more going on there it'd probably be the better place between the two. I get why the thought of a tourism would turn people off from living in a place, but in reality, nowadays the same thing that attracts people to visit cities are the same things that attract people to live in a certain city, just look at how Airbnb more less turned every city into a tourist destination.