Paramount won’t give you the detailed information about foam density that smart buyers want. See my previous post here:
https://forum.mattressunderground.com/t/innerspring-mattress-for-a-teenager-in-richmond-va
On the other hand, although it has been only 18 months or so since we bought the Paramount mattress, it remains extremely comfortable and seems to be holding up just fine. No major indentations of the top layer. Of course my daughter will go off to college in 4 more years, so longevity for that time frame is all I wanted. Hope it lasts longer than 10 years.
Good luck. I took my chances. So far so good with Paramount. Price sometimes wins so long as PPP expectations are met.