Some of the best seltzer brands include Topo Chico, LaCroix, and Perrier. All of these brands offer a variety of flavors and unsweetened and lightly sweetened options.  If you are looking for a seltzer with more flavor, try Fever-Tree or Schweppes. These brands offer unique flavors like ginger ale and bitter lemon that can be enjoyed on their own or mixed with other drinks.