Not going to make a decision untill I see HARDCORE games on the shelf.

A Wii Remote for when my lady comes over.

If I owned none of the systems and had to pick now, PS Move.

After just buying the Will and enjoying it greatly, I am certain that Ps3 games for Move will be superior because they will dominate in graphics. Natal still leaves me with more questions than answers.

I already have a Wii Remote and will actually be buying both Natal and Move.

But I voted for PS Move, as I'm more excited about it. In my opinion Move combines the best from both worlds, Wii Remote and Natal. It has a real motion sensing controller like the Wii Remote with "what we in the future call "buttons"", allowing for fast reactions and sensitive controlling. And it has a camera with a multi-array microphone, so all games for EyeToy and many games for Natal can be implemented for Move as well.

On the other hand, I'm getting more and more sceptical about Natal. Natal sounded fantastic when it was first announced, but meanwhile it's getting more and more obvious that Natal has a whole number of disadvantages and is just not what the average gamer wants.

I don't know anything about Natal right now so my vote is for PS Move.
We will see what happens at E3 though.

Move - lack of IR makes it useless since it require complete auto aim to actually work plus it's way too pricey for being just not-that-good-copy-of-wii.
Natal - it all depends on the games library and space it needs to actually work properly. if MS can make board-type games and first person adventure titles that would use only natal and they would actually work good i might get it.
wii remote - perfect sollution for motion controls right now.

I voted None because I already have a Wii Remote + Wii Motion Plus, and both Natal and Move have yet to show any meaningful game. I could get the move, but only if they show a "must buy" game, but due to my tastes I doubt Sony will have something for me at launch.

I already have a wiimote I'll probably buy both move and nadal, but I'll wait till E3 to decide

I have a Wii and that's plenty enough motion for me. And nobody can pull a 4 player party better than Mario =P