I'm from Sarasota, Fl can't go wrong with Siesta key beach, Ann Maria beach, Coquina beach or Bradenton beach. Other good beaches in the state are Destin, Fort Whalton beach and Clearwater beach. All those beaches have turquoise colored water and white, soft sand. Being a Floridian I wouldn't recommend key west if you're looking for a great beach, it's great for snorkeling and fishing and good night life. Isla Morada is nice too.