Hi flyby123,
The manufacturers I “officially” recommend are the members here which of course includes SleepEZ.
they are all among the best quality/value available but there are also many other manufacturers across the country that I think highly of (including Foam Sweet Foam and Restopedic) and that also have great quality and value.
I also recommend a specific set of steps (in post #1 here) which can lead to the best quality and value choices based on the specific criteria of each person and these include starting with local testing first whenever possible to become familiar with the types of mattresses and materials you tend to prefer. There is some great local value available in many areas of the country. The online manufacturers make a great “value reference point” so that you have some good value reference points available to make meaningful comparisons with any local “finalists” so you can make the best possible final choice.
Phoenix