Hi T2P,
The choice between different types and blends of latex is more of a preference and budget choice than a “better/worse”. There is more about the different types and blends of latex in post #6 here and there is more about blended Talalay vs 100% natural Talalay in post #2 here that can help you decide between them.
When you can’t test a mattress in person then the most reliable source of guidance is always a more detailed phone conversation with a knowledgeable and experienced retailer or manufacturer that has your best interests at heart (which would certainly include Flexus Comfort) and who can help “talk you through” the specifics of their mattresses and the properties and “feel” of the materials they are using (fast or slow response, resilience, firmness etc) 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 more about “matching” their specific mattress designs and firmness levels to different body types, sleeping positions, and preferences (or to other mattresses that they are familiar with such as Savvy Rest) than anyone else.
Their closest approximation to the Savvy Rest would probably be using the same type and blend of latex in each layer in a similar firmness level for each layer. While their soft, medium, and firm layers may not be an exact match for the firmness levels in the Savvy Rest you tested … they would likely be reasonably close.
Phoenix