The Classroom Presenter Plus was developed for the classroom teacher that teaches in the same room the entire day. This is our newest system and takes advantage of a 2 wii remote setup. Do you anticipate several different teachers and/or students using the system? If so, the Classroom Presenter Plus is ideal. The 2 wii remote system will provide better and more consistent tracking than the 1 wii remote systems. Turn the system off/on with a remote and system setup only takes seconds each morning. The dongle version includes a portable license for smoothboard that can be used on several computers.