Hi awoods,
Savvy Rest uses either GOLS certified organic Dunlop made by CoCo latex or 100% natural Talalay made by Radium in their mattresses.
Sleeping organic uses either 100% natural Dunlop or GOLS certified organic Dunlop (the 100% natural is the default and the organic is available as an upgrade) or 100% natural Talalay. Their Dunlop comes from Sri Lanka so it would likely be made either by Arpico or by Latex Green (both of which are in Sri Lanka) and both of these are very comparable to each other and to CoCo latex in terms of quality. I’m not sure who makes their Talalay (if I had to guess I would say Radium) but it would also be either closely comparable or the same as Savvy Rest in the same ILD range.
If you are comparing molded 100% natural Dunlop made by different manufacturers and they are the same density then they would be closely comparable in terms of firmness as well. There is also more about the differences between organic Dunlop and 100% natural Dunlop in post #6 here but the main difference is the certification itself … not the feel or performance (again if both are the same density/firmness).
They both use organic cotton and wool but I don’t have any personal experience with either one of them so you would need to talk with them about the more detailed specifics of each of their covers (type and thickness of cotton, type of zipper, type and amount of wool, how the bottom and top of the cover are finished etc). You can see a few comments about the Savvy Rest cover here and here. They would both be relatively “tight fitting” but I don’t know if one would be any tighter than the other.
Phoenix