Hi Molly!
Just for clarity, I don’t make recommendations for stores unless they are a vetted TMU member here of our website.
Aside from that, and subject to first confirming that any retailer or manufacturer on the list that you wish to visit is completely transparent about the mattress specs you need to know to make an informed mattress purchase and to making sure that any mattress you are considering meets the mattress quality/value guidelines here.
I would also recommend you review our article on choosing a great mattress outlet, which may help you narrow down the options in your local area.
You may also be interested in post #2 in this thread by a consumer in the Baltimore area. The references are three years old, so things may have changed since, but it’s a place to start!
I hope that helps.
Phoenix