Hi thebeerbaron83,
There are two things that will happen concurrently when you buy a mattress … both of which can have a small to significant effect on the feel and performance of a mattress depending on the materials themselves and on the person as well. One of these is the initial break in period where the materials in the mattress settle in, the cover stretches, and the foam softens and loses any “false loft” in its initial firmness. This will generally happen more quickly with lower density foams and a little slower with higher density foams. The other is the adjustment period where your body will adapt to the differences between a new sleeping surface and the one you are used to. Depending on how much difference there is between your old and new mattress … this can also have a significant effect on how a mattress feels as your muscles “relearn” how to sleep and align themselves to a new sleeping surface. These both tend to happen over the first 90 days or so but in most cases the first 30 days are the most significant. The memory foam in the Tiffany is 5.3 lbs and may take a little longer to initially soften than say the 4 lb memory foams that are usually used as one of the memory foam layers in in most mattresses that are designed to “approximate” the Tempurpedic Cloud Luxe.
Post #2 here also has some information and suggestions that may be helpful with a new memory foam mattress (including the potential effect of a mattress protector that you mentioned).
I would keep in mind that the “feel” of a mattress and the “softness” of a mattress are two different things because different types of memory foam use different chemical formulations that can change the feel and response of the memory foam even if they are the same softness or density. You can read more about the many differences in memory foams in post #9 here.
Having said that Dreamfoam has said and most of the members here that have purchased one seem to agree (in spite of softness being somewhat subjective) that their 13" gel memory foam mattress has a similar softness level to the Tempurpedic Cloud Luxe except it’s just a bit firmer.
Post #12 here has a list of some of the better online memory foam manufacturers that I’m aware of and most of these would be quite knowledgeable about how their mattresses compared in terms of “feel”, quality/density of materials, or design (or sometimes all three) to the various Tempurpedic models or in some cases some of the other more widespread or better known memory foam mattresses made by major manufacturers.
Phoenix