Hi pauliepairs,
All three are component mattresses where you can choose the type and firmness of each of the layers, re-arrange or exchange layers, come with a zip cover. All three have the specific details of the layers they offer and the details of each layer on their site.
With Savvy Rest you can choose either 100% natural Talalay or 100% natural/organic Dunlop in each layer. They only offer 3" layers.
With SleepEz you can choose either 100% natural Talalay, blended Talalay, 100% natural Dunlop or on request organic Dunlop as well. They also come in 3" layers except for the 9000 which has a top layer that is 2".
With FloBeds you have the choice between 100% natural Talalay or blended Talalay. They also have a 2" convoluted top layer that is their “standard” top layer (although you can also request a solid layer) and their vZone also offers the option of customized zoning.
The exchange policies are different and the details are on each site but SleepEz and Flobeds also have a money back return policy which Savvy Rest doesn’t.
You can read more about the different types of latex in post #6 here but they all use very high quality materials and components and have no weak links in their mattresses.
Phoenix