The new xbox 360 slim is smaller and quieter, nothing else is really different from the older versions. The kinect is what makes the deal. For those that are weary about buying one, go get one. You will not be disappointed. I could compare it to the wii, but it doesn't even come close. Microsoft hit the ball out of the park with this one. It read your body almost flawlessly. Although there are some quirks, like in 2 player, I think they would be fixed by a larger play area. All in all, great product.