Hi cschell.
You may be interested in checking some other site members in New York City such as Nest Bedding or Urban Natural Home Furnishings, or if you are considering drivinga little further, then Comfort Sleep Systems, or Shovlin Mattress company in Fanwood, NJ , or Magic Sleeper all have a wide variety of mattresses which may have some good options for you.
Aside from those businesses I have discontinued the provision of listings of potential retailers in various geographic regions (unless they are a vetted member here of the site.), because of the difficulty in maintaining such lists in a retail landscape that is constantly changing, and most importantly the confusion it was creating with the consumer members who incorrectly assumed that these businesses had indeed gone through the strict qualification process and were approved as members of The Mattress Underground. Such an assumption was unfair to both the consumers seeking assistance, as well as the very businesses and manufacturers who have indeed qualified the be members of The Mattress Underground.
You can perform a forum search and you can type in the key term any city or area you would be closer to and consider driving such as New York, NYC (or Manhattan, Brooklyn, Nassau) or any other area and see what other businesses have been discussed in that region which may be helpful to you.
Whatever direction you chose to go with your purchase I would always confirm that any retailer or manufacturer that you wish to visit is completely transparent (see this article) and also make sure that any mattress that you are considering meets the Post #13 quality/value guidelines here.
I hope this helps. Once you have a chance to narrow down your finalists please let me know and if you have more specific questions I’ll be happy to assist you.
I’ll be interested to learn of your eventual decisions.
Phoenix