I was tortured by NY/NJ traffic to get to the place where the speakers were, but that's typical.
Physically speaking they were as expected for their age with no deal-killer imperfections to be concerned about. We listened through an amp with a similar power rating to my current one, 300 watts per channel.
The biggest difference I found was in the mids and highs which were different, not necessarily better nor inferior to my 3.5's. No mistaking they were Thiel; if my 3.5's were ailing or unrepairable I would have scoffed them up immediately. I could not justify replacing my 3.5's for what I can at best describe as a nuanced or subtle improvement. The bass was equally good, albeit not as deep as my 3.5's - that would not have factored in whatsoever given the aforementioned scenario. They were beautiful sonically.
I cannot help but feel a little bummed by the fact that Thiel is no longer what it was as I write this. Knowing there is a "guy" with his name on the equipment is a reassuring aspect of owning good stuff. Thiel is great stuff