Hi brianj,
The best place to start your research is the tutorial post here which has all the basic information, steps, and guidelines that you will need to know “how” to make the best possible choices … and know how and why to avoid the worst ones.
As you will see in the tutorial … I would focus on finding the better retailers and manufacturers in your area and the materials in a mattress and I would tend to ignore the “brand” of a mattress which really isn’t relevant because all manufacturers have access to similar materials and the construction and the quality of the materials that are inside a mattress are much more important than the name of the manufacturer on the label (see post #5 here). Who you deal with and their knowledge, experience, service, and transparency can be one of the most important parts of a successful mattress purchase.
The better options and possibilities I’m aware of in the Cleveland/Akron area (including the areas in and around Canton) are listed in post #2 here.
Phoenix