One sided beds can be made plusher and more comfortable than two sided beds. One sided mattresses can feature Memory foam, Latex, and Pocketed coils, which are not found in two sided beds. These toppers deliver comfort and durability that regular foam can not.
In Basic bedding the cushioning layers wear out before the spring unit so everything being equal Two Sided beds last twice as long as One Sided beds. The negative to two sided mattresses is that they shake or rock more. High coil count spring units lesson this.