At launch, I doubt I will be getting any of these consoles. Eventually I will be getting the PS3 because it looks amazing, and the online feature for free is definatly something I lvoe about PlayStation, which is the only thing I sue my PS2 for, online play.
The Wii doesn't entice me with the interactive controller "wand" because some of the games that are compatible with it, are cheaply put together. However, even with the regular controller, I don't see any games that really appeal to me. But I think it's safe to say that Nintendo is back, after a third place finish in the last next-gen competition.
I actually got my first look at the 360 yesterday at a friends' house. The games look amazing and in HD, it would look even better. The gameplay was good, and I'm definatly going to get that to go with the new HD capabilities I just got. Although, some of the gaming titles don't quite entice me.
The PS3 is probably going to be the best selling console with great games like MSG4, and GTA4, which is one of the best franchises ever IMO. At a $600 tag, it really doesn't seem worth it. If it were $400 I would be buying this the day it launched, but I won't be touching it until it at least drops near there.