My folks got the Move a week ago and, since playing it, my kids have been asking about it all week. They loved it. 3 and 5 years old. My oldest gets it and can play it very well (even whooped me on the sword fighting game a few times) and the 3 year old isn't too bad. My point is, like the Wii, you'll get a lot more out of this thing in a family or low-key party environment. My son's b-day is coming up, so I think he'll be getting it... and when Time Crisis comes out, I'll be hogging it... hehehe...
Can't say much about Kinect except the one review that I read (from a playable demo months ago, so take it with a grain of salt, perhaps) didn't have many positive things to say about it, from the quality of the games to the accuracy of the motion tracking.