Piano, they have new tubes that are identical to the NOS Telefunkens. Of course the new tubes are much cheaper. I bought two of the new tubes, and one was bad. When I told them about it, they had another tube on the way before I got off the phone. That was at Tube Depot.
The new tubes sound fantastic; how much better the NOS sound, I don't know. Could you mull that over and get back to me.
I plan to buy 10 tubes, and the difference in price is significant.