Hi kai920.
Sorry to hear that your new mattress did not work out for you.
The Quantum Micro unit appears to be similar to the Quantum pocket coil product offered by Leggett & Platt and you can see the spec sheet here, and the info that TMM provides directly about unit here. These are smaller diameter “pocket coils” that allow for more coils to fit in the same space used as support systems. They are a high quality and more “premium” pocket coil support system that you would find in more premium mattresses.
Some of the latex producers use fillers in their specialty products (such as TGs “Talalay mineral”) but the Cu in it is microencapsulated as to mitigate the antagonistic impact copper has against latex. (Microencapsulating with the size of the capsule is smaller than 1 mm is used against PCM leakage) and is also used to improve the processability and heat transfer (due to the increased surface area) of the PCM. The amount of Cu that is added to the latex is, of course, part of a formulation which is proprietary, but it would be done in such a quantity as to not negatively impact durability. The benefits of Cu used as a filler in both memory foam and latex are connected with its thermo-conductive properties, I know that copper fillers in Memory foam and latex are advertised as having side “health benefits” (like copper bracelets) but to my knowledge, these benefits have not been proven in copper infused foams. The main benefit for adding Cu to latex or memory foams would be for thermal conductivity (which generally is not an issue with latex, to begin with) so I personally would not make a priority to choose one over the other (with or without copper)
As you know … Texas Mattress Makers is one of the members of this site which means that I think highly of them and I believe they compete well with the best in the industry. While I don’t know the specifics of the mattress you are considering … the odds are good that it uses high-quality materials and has no weak links.
Both mattressess you are considering have no weak links, in their construction and use good and durable materials, but only you can determine if these are suitable for your personal needs and preferences. The Avocado Green Mattress uses 2" of 75 kg/m3 (plush) Dunlop and 1" of 95 kg/M3 (firm) Dunlop. The pillowtop version adds 2" of 85 kg/M3 (medium) Dunlop. It is 100% NR latex. It uses the Leggett and Platt Quantum Edge Bolsa Nested innerspring unit. This mattress features good quality and durable materials, and there would be no “weak links” in its componentry. The cover is wool and organic cotton. But I would keep in mind that it has no fine tuning options if it turns out that it does not fit you and the only ability to customize is to add the pillowtop option.
The Brentwood Cedar uses: Cotton ticking quilted to wool, tufted design.2" Dunlop Latex (5.3lb medium-firm, 4.0lb medium plush)2" 4.7 lb Groved Dunlop Flaxseed Fiber pad 8" pocketed spring system (I believe the Leggett and Platt Quantum Edge Elite Combi-Zone) Coconut husk support layer.
If you’re unable to test either of these mattresses in person, then the most reliable source of guidance is always a more detailed phone conversation with the manufacturer. They can help “talk you through” the specifics of their mattresses and the properties and “feel” of the materials they are using and the options they have available that may be the best “match” for you based on the information you provide them, any local testing you have done or mattresses you have slept on and liked or other mattresses you are considering that they are familiar with, and the “averages” of other customers that are similar to you. They will know much more about “matching” their specific mattress designs, options, and firmness levels to different body types, sleeping positions, and preferences (or to other mattresses that they are familiar with) than anyone else.
Phoenix