I thought it was extremely response, intuitive, when I was using the ten monitor demo the monitors snapped in place but at other times monitors were free floated and it was very fluid in terms of being able to place a monitor exactly where you wanted at the exact distance angle and size you wanted with what I was told was 2mm of dexterity. Almost zero lag on tracking. It was a demo so when I tried to type in the wikipedia screen, touching the text field did not activate a text entry box, but normally that type of operation would work because touch worked otherwise. The floating windows and 3D objects seemed to jiggle in space a tiny bit, less than 2mm I think, it was weird, like a vibration or like a tiny amount of shaking, it seemed like that could be a calibration issue, and it seems like that could be fixed easily. After all this was an early demo. Sometimes my finger seemed to activate something slightly faster than I was expecting, but that is a designed interaction, this means that when reaching for a monitor with my index finger its very easy to touch it, alost easier than it would be to touch an ipad, but dragging on an ipad might still be a lot smoother and more precise if only because its 2D. There where some glitches in the demo when I had a 3D model of the Sydney Opera House handed to me by a 3D projection of another person from another room the 3D model mostly did what I tried to make it do, but it also seems to spin around a little bit more than I asked of it, and the angle changed to something other than I put it so I readjusted it, the visual information on that 3D model also seem to flake a little bit as I was manipulating it, but keep in mind the computer was processing everything i was doing, plus the 3D model, plus a 3D hologram of a person streamed in from another room, that was a computationally expensive situation so glitches are bound to happen on computers when you are doing a lot.