Hi mg517,
If you’ve tested the mattress carefully and objectively for PPP using the testing guidelines, you are confident that the quality/durability of the materials are “good enough” for you based on knowing the specifics of the materials inside the mattress, and that out of your finalists the Cool Ultra is the best choice for you based on the criteria of your personal value equation that are most important to you, then I would say you are making a good choice that is “well informed” and of course that’s the main goal of the site.
So congratulations on your new mattress 
I’m looking forward to your feedback once you’ve had the chance to sleep on it for a bit.
Phoenix