The best speaker you ever heard?

Mickey Katz was the first and the absolute pioneer of using cat hair for cabinet damping; the results were amazing with much more open detail than synthetic fibres or wool. The cat hair was collected washed 3 time in a lime based soap and then ratted into pillowy balls.

Yes, they sounded fantastic

Funny as I just hooked up my new/used Ayre AX7e integrated with my Proac Supertowers and WOW what a difference. I'm still using the 'tubed' MIT CVTerminator (made for tubed gear). Talk about a HUGE difference. The speakers sound warm and inviting. Huge soundstage pin point imaging. Air around every note and there is a wall of music with depth and even some height, lol. I'm loving them again. I still want the Vandy Treo's, but until I can sell off everything else, I have a great system in place that is musical. I"m hearing things I haven't heard since my Quickie pre/silver mono's were hooked up.

The pair you just purchased

No, the ProAc's are one of the three pair of Proac's I'm selling as I"m going to buy the Treo's. I just didn't realize how good these Proacs are. The dealer installed new drivers and made some upgrades he said and right afterwards I had to switch out to a small NAD integrated as my wife wanted remote control. This is why I'm selling my Quicksilver pre and amps too. I have just decided to sell off everything and start over.

Large Magnepan electrostatic panel speakers at hi-fi shows always leave me with the impression of best sound at the show; and they are actually relatively inexpensive.
However, I would never want to house these huge 'room dividers' in my living environment.