Hi Dolomatt,
I would first make sure you’ve read the tutorial post which has all the basic information, steps, and guidelines that can help you make the best possible choices.
Both of the manufacturers are members of the site which means that I think highly of and would recommend either of them. They both compete well with the best in the industry in terms of their quality, value, and service and which one would be “best for you” would depend on the specifics of each mattress you are considering. Which one would make the best final choice for you would depend on the parts of your personal value equation that are most important to you.
You are certainly looking at some good quality/value options but I would narrow down your choices to specific mattresses and then you can make more meaningful comparisons between them.
Phoenix