The best speaker you ever heard?

After having listened to Apogee Divas for the past 16 yrs, I heard a system at the 2005 CES in Vegas from McIntosh Labs that blew me away. It was a Proto-Type of their Flagship Speaker, The XRT2k....they sounded really exceptional.
System had 110 perfectly matched mid/tweeter drivers @ side, and a seperate bass column w/ (6) 12" subs @ side. This will be the next step in my audio evolution. The sound was awesome.

yes, sir. You are right. I have something close to that, and on sale here at audiogon.

http://cgi.audiogon.com/cgi-bin/cl.pl?spkrfull&1118461954

Hi Hifi, thanks for doing all that work. That was very interesting. Can you tell I haven't looked at this thread for a while? ;-)

they were Bose speakers & the receiver was a Yamaha.
simply awesome.

Martin Logan Grand Slamm.I heard when they first came out at a Stereophile Show. I think at the time they cost $70,000.00 a pair.They had a pair of these huge woofer towers with 6 12 inch drivers as well.Amazing transparency,speed and slamm.