Hi Ascendedmind,
I don’t recommend specific products and value is relative to the criteria that are most important to each person but I’m happy to help with how to choose rather than what to choose.
There is more information about the different types of latex in post #6 here so you can compare apples to apples between products. All latex is a durable material.
“Comfort” is subjective and each type of latex has it’s own “feel” and range of firmness levels and which one you prefer would depend on either your own personal testing on each type and firmness or if you haven’t had the chance to test both of them your own more detailed conversations with each manufacturer. There is more information about choosing a topper in post #8 here (which also includes a link to some of the better options for toppers I’m aware of).
Both of the manufacturers you are mentioning are members of this site and are open and transparent about the materials they use and are also very knowledgeable and helpful when you talk with them on the phone. In the absence of your own personal testing they can provide you with some good guidance about their toppers.
Your own “best judgement” and your confidence that the topper you purchase in combination with your mattress will be suitable for you based on your conversations are the best way to make a final choice about which of these is the best choice for your specific preferences and circumstances.
Phoenix