The Wii...
Besides that, it's a difficult choice. The Move is a controller with buttons, so it has the advantage of having additional inputs besides motion. Though because of how it's designed I don't see how the motion could be featured without it being the focus. Many good Wii games use the Motion control as a subtle part of the game making the grunt of the gameplay controller based in it's landscape position.
Kinect Has no buttons, so every thing has to be done with motion unless they add the controller. I like buttons, they are easy to use and responsive. Motion controls are ether too exact or too inprecise. The only way I think I'd be able to enjoy anything beyond Mini-Game collections or simple two command games is if the Controller was the main input and the Kinect was used subtly. Like if a Jungle FPS that was controller played, but gave you the option to brush leafs out of your face or push an attacker off of you. Or a game like Okami where everything is controlled via controller until you want to make a brush stroke, in which you would by just waving your hand.
All three are great, Kinect defiantly has potential but I fear it won't be for a while until companies learn to use it right like Nintendo has. While the Move is also great, it has one flaw I can't overlook and that's the way it was designed to solely be a motion controller meaning it can't be used in tangent with a regular control scheme. That is, unless you have the extra attachment, though it still isn't as well designed as a Wiimote is. Only time will tell if it's a solid enough design though, creative developers can make anything work.