I have never heard them, but I considered purchasing three for my basement theater before the last price increases. I hesitated because I knew purchasing the front three would have led to me purchasing their surrounds also. I really couldn't justify the money at the time. During my conversations with JTR I expressed concern about buying without hearing first. I live about two hours away from their current location. The company offered to deliver them to me and set them up for best sound in my room.
I own two of their S2 subwoofers. The subs were a revelation. The subs I had before were loud. My wife once complained that she heard the movie I was watching in the shower, two floors up. The JTR subs can play loud, but they also have a sound of their own. In all the years I had listened to music, movies, etc. I never realized how much overhang I was hearing. The new, cleaner sound took some getting used to. I have no plans of upgrading the subs.
Based off my experience with the company's sub, personal prior contact with them, and rave internet reviews I would consider them again if making a purchase in that price range.
If a used model that fits my room becomes available within a days drive I would buy them.
John
