Rich, one other thing that's really important. I had the M50s in the living roo. I really enjoyed them as I've extensively reported. But-and this is an important but-I simply could not live without the mid-range and improved highs of the M5. It's not just the improved accuracy the M5s offer. It's also the improved dispersiveness of the mids and highs that expands the soundstage. Lows are also more linear.
I expect with the M60s you will get what I described above. If you want the greater bass linearity, you will need HP drivers. How important this greater bass linearity might be for surrounds isn't something I have compared. But I know it's important for mains and I love the HP driver in the QS10.
