It depends on the look and functionality that you want! The Atlas Shelf is designed as a built-in carpentry alternative, with its easily adjustable shelves built in solid wood and steel for longevity. It is suitable for all sorts of walls as the support structure relies on the floor for loading rather than the wall. Floating Shelves deliver a specific aesthetic to your space, and are not removable so they will have stay in your space, if/ when you decide to change location. This is only suitable for installation on concrete walls.