Hi smeagol108,
Like all latex … it’s a good quality and durable material although it most likely wouldn’t be as resilient as a Dunlop layer that used a higher natural latex content. There is more about the different types and blends of latex in post #6 here. Like all of their products … it’s also good value and could make a good lower budget choice for a latex support core.
I can only comment comment about the quality of a material though because there isn’t any way to know how well any core will work for you in combination with any other layers you may add to it or with any specific cover outside of your own testing or sleeping experience.
Again … there is no way for me to know this until you have slept on the specific combination of materials you are considering (see mattress firmness/comfort levels in post #2 here). Some zoned toppers may work for you and some may not depending on their thickness, firmness, and on the other layers and components above and below them. If you are trying to build your own design with individual components then I would make sure you read option #3 in post #15 here so that you have realistic expectations of success and the learning curve and trial and error that may be involved.
The reason I like the vZone is because they cover the three most important zones which are under the shoulders, under the hips/pelvis, and under the waist/small of the back. While the other zones may be useful to some degree as well … they are more of a “side effect” of having the 3 main zones that can be customized (one of which wouldn’t be separately zoned with a standard 3 zone layer).
Phoenix