A:Answer All in one refers to the fact that everything to produce the VR experience is contained within the headset and controllers. So cameras, PC, screen, sound, game library are all in one system that you wear on your face. That is what the Oculus quest is. A VR experience that is easily accessible and enjoyed by anyone. Oculus Rift is a seperate system of VR headset and controllers. They require a PC and wires that run from your head to the PC to play. Rift will have superior games, but for the price and accessibility it may not be worth it for you to go with the rift. For reference, the Quest is capable of producing VR games with the graphic quality of a high end Xbox 360, or PS3 game.