Hi TnTWalter,
The quality of the latex is the same (they would both be using the same type of latex).
Which one is the best option for you would really depend on which parts of your personal value equation are most important to you. The Beautiful is a known quantity that you have tested in person but has fewer options after a purchase if your testing wasn’t a good indicator of your longer term sleeping experience in terms of PPP. The SleepEz is less costly and is “many mattresses in one” because you would be able to re-arrange or exchange layers to fine tune the mattress and they have a return policy as well which both lower any risks involved in a purchase but it will be different from what you have tested because of the differences in the design.
It may also be worth talking to some of the retailers here to make some value comparisons with the Beautiful.
Both of these are good quality mattresses and have no weak links in terms of quality/durability so you would be making a final choice between “good and good” which means that only you can decide which is the best choice for you based on all the objective, subjective, and intangible factors that are most important to you. Each person may have a different answer.
Phoenix