Hi Prvndc,
I split your post into a new topic so your questions don’t get mixed up with other posts in a more “general” topic.
All of these would make good choices and there is no “best choice” except the one that is “best for you” based on all the parts of your personal value equation that are most important to you (regardless of what may be important for someone else).
The most important part of the “value” of a purchase is your confidence that a mattress is a good match for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences). When you can’t test a mattress in person or a mattress that is very similar … then more detailed conversations on the phone with each online manufacturer or retailer you are considering that can help you decide whether a mattress is likely to be a good “match” for you is one of the most important parts of an online purchase (see mattress firmness/comfort levels in post #2 here).
The next most important part of the “value” of a mattress purchase is to make sure you know the type and quality of all the materials inside the specific mattress you are considering so you can identify any weak links in the mattress and make more meaningful “apples to apples” comparisons with other mattresses. All of the options you are considering use latex which is a high quality material. There is also more information about the different types and blends of latex in this article and post #6 here. Since latex is among the most durable materials in the industry … none of the mattresses you are considering have any weak links in terms of durability. The SleepEz 9000 uses an inch less latex in the comfort layer than the other two you are considering so their 10000 model would be a more “apples to apples” comparison in terms of the thickness of the latex layers.
Outside of PPP and the quality of the materials … the other parts of your personal value equation that are most important to you would also be significant parts of the “value” of a mattress purchase and which one would be the best choice for you including the price (and any shipping costs) and the options you have to customize the mattress either before or after a purchase or to return it and the costs involved.
Post #2 here also has more information about making “final choices” when your are comparing “good and good” and there are no clear winners between them.
There is more information about the type of foundation or platform bed that would be best for different types of mattresses in the foundation post here and the posts it links to. In general though … an all latex mattress usually does best on a slatted foundation or platform bed which has a rigid non flexing surface and slats that are no more than 3" apart. You can read more about a solid surface foundation in post #10 here.
Plushbeds (and other retailers as well) have ongoing sales that are meant to create a false sense of urgency. They are always on sale.
They also use good quality materials and are certainly a “better than average” choice compared to most of the mainstream mattresses you will encounter but they may not be in the same “value range” as some of the other options you are considering either in terms of the options they have available or in terms of price but of course the “value” of a mattress purchase always depends on all the objective, subjective, and intangible parts of your personal value equation that are most important to you. They certainly spend a great deal more on online advertising than any of the other options you are considering. A forum search on “Plushbeds” (you can just click this) will bring up more information and feedback about them.
You are certainly looking at some very good options and none of them would be a “mistake” in terms of quality or value.
Phoenix