Hi ngyenluancmg,
Welcome to the Mattress Forum! 
Your question is much too broad for a specific answer. There are a wide variety of mattresses of innerspring, polyfoam, memory foam, latex and natural fibers made in both the United States and Japan. One design isn’t necessarily better than another, but it’s more about learning about the quality of componentry used within a mattress and then finding out through personal testing what might be best for your personally, as outlined in the mattress shopping tutorial.
Phoenix