I finally picked up a Kinect (Gamestop used for $17, how can you not?), and I returned the first one, because I thought the Mic was broken. The second one was just as bad at picking up commands. I expected, foolishly, the same or better quality than the Kinect 360. I installed Cortana, and it is way better, and usually works. But the fact that the neutered the setup by removing gesture controls, pretty much doomed it. It's good for switching apps, but the second you get there, you need to pick up a controller anyway.
I use it for:
-Turning the Xbox on/off
-Turning my volume up
-Pausing/Playing movies
They should have left gesture control in it, and made sure it could act as a "cursor select" in any app. Even if you didn't use it for games, it would have been a worthwhile accessory, that I would have paid $100 for. But since they crippled it in comparison to the 360? Stupid. Just absolutely STUPID on Microsoft's part.