Hi JTM,
I’m sorry that your mattress didn’t work out for you. 
Subject to first confirming that any retailer or manufacturer on the list that you wish to visit is completely transparent (see this article) and to making sure that any mattress you are considering meets the quality/value guidelines here … the better options or possibilities I’m aware of in and around Orlando are listed here. The Tampa/ Clearwater/St Petersburg areas are listed in post #143 here. The Sarasota/Brandenton list is here.
I look forward to hearing about your new mattress!
Phoenix