I have no personal experience with Thiel, only Aerial, but what I can say is that after having upgraded speakers about every 6-8 months (!) I have now lived with Aerial 20T in 18 months. New record!! That is something, isn't it? And I have now plans of replacing them. In my opinion they better all Wilson speakers which also are mentioned here, including the larger ones if you pair the 20Ts with some good subs for ultimate bottom end, depending on your room characteristics, of course.