Hi bettinamonk,
The Urban organics are to my knowledge an "all latex" mattress with no polyfoam in the mix. This means that they would be very durable and keep their feel and performance much longer than other materials that will soften faster than latex. It would be rare that you would find a review online about any latex mattress (at least one that really was all latex and not something else that was "sold" as all latex) that complained about the quality of the mattress ... although it would be more common to see reviews that showed that someone made a choice of layering that didn't work out for their needs and preferences.
The plush is still getting deeper which is a suprise. This might be the cause of some lower back pain ive been having recently? Im starting to think getting the luxury firm would be a really bad decision considering how this one is turning out and they only have a half inch of foam difference.
The initial softening of polyfoam and memory foam will usually last about 90 days and then become more gradual. The lower the density ... the more it will likely soften. This could certainly contribute to back issues, especially if the initial softness and layering of the mattress was already "on the edge" of what was best for you.
We will try to lay on the extra firm with a thicker topper than the PLB, probably a memory foam, when we go back on sunday to try and get an idea of how it would kind of feel if i added the rejuvenite.
This would be a good idea. Bear in mind that most memory foams will allow you to "sink through" them and feel the firmer layers underneath more easily than latex and that a lower ILD latex such as the 14 ILD PLB, even of the same thickness, will also allow you to go "through" it into the firmer layer more easily than a firmer ILD such as 19 or 24 ILD which would still be soft but keep you "off" the firmer layers more effectively. I'm mentioning this so you can take the differences between different types of toppers ... even of the same thickness ... into account in your testing.
Thanks again phoenix for providing insight and a place to talk about my mattress woes!
You're very welcome
Phoenix