Hey guys, looking at buying one of these 2 systems. As far as I can see they are pretty much the same? I am not even sure if the z5500 is out yet. Also one site said that the z5500's 6 channel input (for computers) can be used as 3 sepearate stereo inputs, anyone know if the z680 does this? Also any other comparable systems to these that include a wireless remote? Thanks guys.