Hi Talkoran,
It’s good to see you are getting close
I don’t know your weight range but two layers of soft latex could be more risky for many people (especially if you aren’t in a lighter weight range) in terms of PPP so I would make sure you do some very careful testing to make sure that two soft layers of latex is keeping you in good alignment. It would also be more risky in terms of durability because while latex in general is the most durable of all the foam materials … softer layers of any material will be less durable than firmer layers of the same material. The good news is that with a component mattress you have the option to exchange a layer if your original combination doesn’t work out as well as you hoped for.
The mattress shopping tutorial also includes a link to a list of the members here that sell mattresses online and many of them also sell latex and latex hybrid mattresses that use different types and blends of latex (including 100% natural Talalay and Dunlop and certified organic Dunlop) that have a wide range of different designs, options, features, return and exchange policies, and prices that that would be well worth considering. Post #3 here also includes a list of manufacturers that sell component latex mattresses and many of these are very similar to Savvy Rest mattresses except of course they are in much lower budget ranges.
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 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.
A separate topper can “act” a little more independently and “feel” a little softer outside a cover than it will by having the same layer inside the cover (see posts #3 and #4 here and the first page of posts in this topic.
There are some comments about the pros and cons of a side to side split layered mattress in post #2 here. They can certainly be an effective way to accommodate a couple that have different needs and preferences but if both sides have the same layering then it’s unlikely that you would feel much if any difference between a mattress that uses solid layers vs split layers. Since a latex mattress will last for a very long time it may still be an advantage to have split layers if a time comes where you may be sharing your mattress with someone else.
I’m looking forward to finding out what you end up deciding.
Phoenix