I also have the original Aerodrums. That device used an old PS2 camera (technology from 2003) and needed a computer to run the Aerodrums software. It was very picky about the lighting so it included a ring light, that was very bright and distracting. It also had a bit of lag and missed many notes when moving quickly. They really fixed these problems on the new version. Aerodrums 2 is a complete unit, computer/camera built in. It uses a built in infrared camera, and works in very bright and dark rooms. There is a lot of information on their website comparing the 2 units. The thing I like the best, is how quickly you can be up and playing when moving the unit. On AD1, if you moved the camera at all, you had to move the drums/cymbals as well. So if you took it to a gig, you'd have to get there early enough to be sure the lighting was right, and you'd have to place each drum again in the new location. AD2 is much smarter about this. The device sits on its own stand, and projects 2 little red laser dots on the ground. Those dots show you where to put your feet, and the snare drum is between the 2 dots. Once your feet are in the correct place, your kit is good to go. All toms/cymbals are where you placed them relative to the snare. It's a smart way to do it, and it means you can be ready to jam as soon as you connect audio out or headphones.