Hi vaesther,
The better options and possibilities Iām aware of in the New York City area are listed in post #2 here.
The tutorial post also includes several links to lists of the better online options Iām aware of (including Brooklyn Bedding which Analog J linked and which is one of the members of the site) in the optional āonlineā step if you are comfortable looking at an online purchase.
Post #4 here also includes several sources for some lower budget online mattresses of many different types (in the $600 or less budget range for a queen) that may also be helpful.
Phoenix