Hi missy,
The Brooklyn Bedding’s PureCool Symphony uses the Tempurpedic Rhapsody Breeze as a reference point and the Novosflow Aria mattress uses the Tempurpedic Cloud Supreme as a reference point so it may be an idea to test both of the Tempurepedic mattresses to see which one seems to be a better “match” for you in terms of PPP to help you decide. There is more about the most important parts of the “value” of a mattress in post #13 here and how well a mattress matches your specific needs and preferences and how well you are likely to sleep on it is the most important part of any mattress choice.
Unfortunately there is no specific comparative testing or scientific information available that compares different mattresses in terms of sleeping temperature so outside of the knowledge and experience of a manufacturer or retailer it’s not really possible to predict or compare how warm or cool any specific mattress will sleep for any specific person except based on personal experience because there are so many variables and subjective factors involved (including where you are in the “oven to iceberg range”). There is more about the many factors that can affect temperature regulation in post #2 here and more about different ways that can be used to cool down memory foam mattresses in post #6 here (memory foam in general tends to sleep warmer than other types of foam) that in combination with your conversations with each manufacturer and your “best judgement” can help you make a more informed choice about whether a mattress will be “cool or warm enough” for you regardless of how cool or warm it may sleep for someone else.
While it’s true that if all the other factors are equal that a thicker mattress will tend to feel softer than a thinner mattress … this is only true if all the materials are exactly the same but with two different mattresses that have different designs and use different types and firmness levels of foam the design of the mattress and the specifics of the materials inside it will have much more to do with its firmness level and how it feels and performs than the thickness of the mattress. Some 6" mattresses for example may feel softer than some 15" mattresses depending on the combination of materials inside each one of them.
A new mattress has an initial break in period over the first few weeks or months (30 - 90 days would be the norm but it’s not usually as long as 90 days) as the cover stretches and loses some of its initial stiffness and the foams lose any of their initial “false firmness” but if a mattress uses good quality and durable materials then once the break in period is over any further changes will stabilize and happen much more slowly over a much longer period of time. Of course if the materials are lower quality then they will continue to soften and break down much more quickly than higher quality materials so in these cases the changes and softening would be more rapid and ongoing.
Neither one of the mattresses you are considering has any weak links or lower quality materials in their design (see post #4 here).
[quote]If “you get what you pay for” is the case here, then I wonder if the more expensive one is the better bed. Or if they are both of equal quality. Argh, so confusing!
Any thoughts about any of my thoughts would be appreciated as I am having so much trouble making a decision! [/quote]
Post #2 here may be helpful when you are down to final choices that are comparing “good vs good” and there are no clear “winners” between them.
Phoenix