Wii - doesn't do HD. Once I got a nice 32" 1080p TV it was very jaggy and dissapoiting. But on my 52" it's even more sad.
Xbox - it give a bunch off hot air. I had to move the Wii cause I was worried it was going to cook it.
I am not a fan of the tray for disk. Espically as I only have room to mount it vertically.
And the little Green LEDs on the console blink rapidly. I find it distracting.
I like the Speaker in the Wiimote. I think speakers in the Xbox and PS3 controlers would be a plus.
Kinect - needs a bunch of room, a bit of a challenge to mount and sometimes I have to say things twice.







