Hi knitsafghans,
This may be the post you’ve already found but the better options and possibilities I’m aware of in the Pittsburgh area are listed in post #2 here. It was originally written in Oct, 2011 but I regularly update the forum lists as new information comes to light and it was last updated on April 24th of this year.
The better options and possibilities I’m aware of in the northern NJ area are listed in post #7 here but there may be considerable shipping expenses involved with most of them to ship a mattress to Pittsburgh.
You can see my comments about the Saatva mattresses in post #1 here and there is more feedback in the rest of the topic as well. A forum search on Saatva (you can just click the link) will also bring up more information and feedback about them as well.
If you are considering an online purchase then the tutorial post includes several links to the better online options I’m aware of (they are in the optional online step). An online purchase from a knowledgeable and experienced manufacturer/retailer that has a good exchange or return policy or where a more detailed conversation gave you the confidence that you would be making a suitable choice in terms of PPP would certainly make sense if you can’t test a mattress in person.
Phoenix