On the centre channel topic, here's related question. I just received my vp100, and I've been trying to manually adjust it to fit with my m60 mains. It seems to need to be set a bit higher to even levels out. I seem to have two options:

1) Set the 60s to "0" and push the centre to "+2" or
2) set the centre to "0" and drop the 60s to "-2"

Any advice on whether one is preferable over the other, or does it matter?