It's matter of preference and choice, but our biggest speaker, Arena 180, will have the most powerful sound , but also requires some space. Our bookshelf speakers, Arena 120 & Arena 130, are also a nice addition to your home system, and will also provide powerful sound. These can be wall-mounted, which you might prefer over floor standing speakers. All of the Arena series will provide a good audio experience, so you won't go empty handed with any of them!