The best speaker you ever heard?

Vandersteen 7. Best I have heard so far, but on the back of a full DCS/Ayre system and a carefully setup room.

I have owned Altec Lancing's "Voice of the theater series" in the 70's -80's. I have been in a couple of recording studios and heard powered monitors that blew me away. They had names like Adam and A.I.R. approved speakers that I can not remember. Check out Mojo's speaker reviews. I heard the Vaughns and they were as good as anything made any where. Problem, I could only afford a 2 speaker system. Now, lets get to best for the money. I wanted the Audiophile 2-channel and also the 5.2 Theater. I found Tekton Design. They are custom made. They take 4-8 weeks to get. I received mine 2 weeks ago. Red 5.2 Pendragons. They sound as good as anything I have ever heard. Let me be clear. I an not an expert. Don't know audio engineering. I do have a demanding ear. I will stop here. Read the reviews. Play the soft and they are full and clear as a bell. Turn them up a little and I am at a "live" performance. You do not just hear the loudspeakers, you FEEL THEM ! Now,I will stop.

Avantgarde horns, they are so fast they make you jump.

By far and without any comparaison possible with any other speaker I've listen to, the OHM F 5015. It is just another dimension of sound.

The best sound I've heard was from a dealer system in Plano, TX featuring JMlab Grande Utopia speakers driven by Levinson and Wadia electronics. This would have been in the late 90's I believe. I haven't heard any uber exotic systems lately so that earlier experience stands as my best ever.