Hey gamafn,
Welcome back to the Mattress Forum ! Thanks for your question.
Just curious, what size mattress are you looking for and where are you located? Several of our trusted retail/ manufacturer members offer Bed In a Box solutions and offer a bit of a discount to our TMU consumer members, something to consider…
Have you read TMU’s “Mattress comfort layers- Overview”? You may find this information interesting while researching your new mattress purchase. Of interest too would be this Ultimate Dream mattress firmness level post #2 where Phoenix discusses one of the most common questions on the forum (which mattress type or firmness level would be better for me?). Also you may want to check out Five steps to your perfect mattress- Comfort and pressure relief, another helpful guide for researching comfort layer materials and thicknesses.
Thanks,
Sensei