Hey Ray, I guess as long as you're happy with the sound. That's all that matters. I was doing it for my own curiosity.
Anyway, these Linlai might just be a tad too tall for my setup, so I haven't really decided whether to go ahead and purchase them yet. But I'm definitely interested in looking for good sounding new production tubes and not relying on NOS tubes. Who knows when the supply of NOS tubes will eventually dry up.