Hi Stine,
All mattress manufacturers have access to the same or similar materials so the type and quality of the materials inside a mattress and the transparency of the manufacturer (or a retailer that sells them) are much more important than the name of the manufacturer. Shopping by brand is among the worst ways to choose a mattress (see post #5 here).
The style of mattress that is best for you would be a personal preference. Some people prefer one type of mattress or materials and others may prefer something completely different. Your own testing will tell you more about the types of mattresses you tend to prefer. The mattresses section of the site has more information about the various types of comfort and support layers as well. There is also more about the pros and cons of memory foam here and the pros and cons of latex here for those that are looking at the two more common specialty foams.
I’m not sure which mattress you were looking at but post #13 here has more about the most important parts of the “value” of a mattress purchase. If you have done some careful and objective testing on the mattress and it’s a good match for you in terms of PPP then the next step is to make sure you find out the specifics of the materials inside it (see this article) and make sure there are no lower quality materials or weak links in the design (see the guidelines here) and so you can make more meaningful comparisons to your other finalists. To their credit Jordans lists the specs of their mattresses on their website so it’s easy to identify whether they have any weak links.
Phoenix