Hi ohaya,
Brooklyn Bedding and Dreamfoam are sister companies and sell through two different “channels”. Both of them are manufacturing members of the site which means that I believe they are among the best quality/value in the industry.
While it’s only possible to make mattress comparisons on a mattress to mattress basis based on the specifics of each mattress … in general the Dreamfoam site focuses more on the lower end of the budget range and the Brooklyn Bedding site focuses on more on their mattress with exchangeable layers or on the more premium end of the line although there is some overlap between them in terms of budget and design. The Total Latex mattress for example is sold on both sites and the Eurotop on the Amazon site has an exchangeable comfort layer that is more commonly seen on on some of their mattresses on the Brooklyn Bedding site.
There are also differences in their return policies which can also be an important part of an online purchase.
In most cases you will find that a manufacturer has comparable “value” across their entire lineup regardless of budget but of course each person has their own unique personal value equation and different criteria about which of the features and options that are part of every mattress purchase are most important to them.
Phoenix