Dave, you'll be interested to know that i have have the pair of these installed, working & calibrated

I'm not going to give too much of an opinion right now as i have literally just settled down, i hurt rather a lot & i have only spun a couple of tracks so far...

What i can say so far is that the difference is in no way subtle & the reviews appear to be dead accurate The room modes appear to have gone, i can hear clearer differences in bass tones & things are even faster & less ponderous in the bottom end.

That's it for now I'll be back