If I could only give one reason for buying a One, it would be that it's way more than a video game console. Not only can you play One games on it (and some 360 games), you can also use it as a DVD player, a Blu-Ray player, a virtual gym (Kinect + Xbox Fitness, streaming workouts, DVD-based workouts, etc.,), a stereo, etc. You can even use it to browse the Internet, YouTube, etc.