When I purchased the Psvane 6SN7 BE’s, the seller said they had about 80 hrs on them. Since then,I’ve put another 30hrs or so on them. I just put the Linlai’s back in,and they are,in my opinion, superior to the Psvane. The Psvane is a little more rounded. (no pun intended) . The Linlai’s are cleaner and more focused on the edges. I would describe it like the difference between cutting paper with a pair of scissors vs a razor blade. I don’t know if that makes any sense to you folks? It does in my mind as I type.( LOL)
Here’s a pic of these side by side: