Hi tcornflake,
I’m happy to help you eliminate the worst choices (which you have done) and help with “how” to choose but once you are down to choices between “good and good” then what to choose is up to which parts of your personal value equation are most important to you. Post #2 here may be helpful when you are down to final choices.
Any one of these would make a great choice and would be a higher quality/value choice than 90% of the mattresses that most consumers end up purchasing so you are in a position where you can’t really make a “mistake” in terms of quality/value.
Phoenix