Hi wenisleep,
In this situation, you’re really choosing between “good” and “good”. Every mattress purchase though includes more than just the “material value” of the mattress and all the many tradeoffs involved in the mattress itself as well as all the other options and services that are part of every mattress purchase are all part of what I call your “personal value equation” . There is also more about the most important parts of the “value” of a mattress purchase in post #13 here but in the end everyone will need to decide what is most important to them and attach a “value” to all the objective, subjective, and intangible factors that are part of any final decision. There is no “best and worst” any longer at this point … only best for YOU.
Some people do place a premium on staying more “local”. Others place more importance on the componentry combined with a good company history, local or otherwise. Both Flexus and SleepEZ offer quality products and offer exceptional customer service, and as you already mentioned, they are both members here of the site, which means that I also think highly of them.
Regarding the importance of organic certifications, this is also part of your value equation. Many people that are looking for an “organic” mattress or materials are usually concerned more with “safety” than whether the materials have an actual organic certification and they usually aren’t aware that an organic certification isn’t the same thing as a safety certification. There is more information about the three different levels of organic certifications in post #2 here and some of the benefits of an organic certification in post #3 here and there is more about the different types of organic and safety certifications such as Oeko-tex, Eco-Institut, Greenguard Gold, C2C, and CertiPUR-US in post #2 here and more about some of the differences between organic and safety certifications in post #2 here and there are also some comments in post #42 here that can help you decide whether an organic certification is important to you for environmental, social, or personal reasons or whether a “safety” certification is enough.
Both brands you’re considering offer comparable comfort exchange policies, and I usually consider 30 days to be adequate for most people to determine if they need to make a change in comfort. As for warranties, in general the are not nearly as important to me as knowing the materials, because the reason most people need to replace a mattress is not a manufacturing defect but the loss of comfort and/or support which is not covered by a warranty. Knowing the materials in a mattress will tell you how long the original qualities of a mattress will last relative to other types of materials, and both of the brands you’re considering use very high quality materials and their warranties are much longer than you would most likely use the mattress. I speak to warranties in much more detail in post #174 here.
Even with good or great mattresses, to choose between finalists is not always easy, especially when it involves a combination of objective, subjective, and intangible factors that can be difficult to attach a “value” to or when the differences in “value” between them seems very small. The good news is that your choices are better than what the large majority of people end up purchasing and in terms of quality and value there are really no “bad choices” or “mistakes” left, and when you are at this point and there are no clear winners between your finalists then the odds are high that any one of them would be a good choice that you would be happy with.
Phoenix