Hi cls721,
You can see some of my comments about the Harbor Plush in post #6 here.
I would continue your search so that you can find a mattress that your testing indicates is similar in terms of PPP (you won’t be able to know based on the specs of a mattress) but uses a little higher quality materials unless you are in such a low budget range that there are no higher quality options available.
You’ve probably seen this but just in case you haven’t … some of the better options and possibilities in the Denver area I’m aware of are listed in post #2 here.
Phoenix