It will be very interesting to see how the number of GC Zelda and Wii Zelda copies distributes. I myself have not decided on whether I want to play Zelda on GC or on Wii but am leaning towards the GC version. It's a bit ironic that as someone who is used to current gen controllers and pc+mouse combo, I am a wee bit intimidated by the wii-mote.
I have the Gamecube and the kids love it. I have a XBox 360 and I have a bit of love for it (still waiting for the killer game to appear, but in the meantime it is a fantastic media extender). I am getting the Wii because I really feel the family (I have four kids under the age of 9) will love it. What better way to get the young-uns into a game then with the new Wii controller. I also think the family party games are going to kick some serious butt on the Wii.