I've had the 970/7075 for a couple weeks now, and at first the combo sounded a bit leaner than the 1070(s) I had previously. I don't know if it's the gear or my ears, but things are sounding rich and full now, and the lean sound seems to have disappeared. I know there is debate concerning electronics "break-in", so I'm not making claims one way or the other...just reporting what I hear.

I was toying with the idea of swapping the 7075 for a 7125, but so far the 7075 has provided all the power I've needed.

Chas,
If I remember correctly from our correspondence in the past, your room is similar in size to mine. I've thought of going with the 7125 too, and maybe on some sources the extra oomph would help, but overall I'm pretty satisfied with the 7075.

And our rooms are not exactly what I would call small! I figure if I ever get a pair of less efficient mains I can always pick up a couple of 2200's.

And the monoprice cables seem to be working fine as interconnects for now. Sure can't beat the price.

Singal Cables with the Bullet Plugs are awesome!