Best Tubes on Market today?

Careful, the Shuguang 845C tubes are a low dissipation tube (70W) and are not a direct drop in replacement 845 for some amps.  Do the metal plate glow red when powered? 

You cannot go wrong with NOS Sylvania, RCA, Mullard, Tung Sol. Spend as much as you can.

I have a cheaper 845 amp that came with stock Chinese tubes from the early 2000s.  I wasn't impressed with the sound so I bought Psvanes.  I don't know yet if it will make a difference.  My options were very limited I wasn't going to spend thousands of dollars on vintage Western tubes.  I'll let you know if the new tubes make a difference.  I would have bought Russian Gold Lions if they were available.  I've enjoyed their small signal and power tubes (KT-77s and KT-88s).Vintage tubes had conferred an advantage in sound quality a nd I bought many of them.  I have a fairly large collection (In my own estimation)  I have been testing them recently and found many with marginal emissions or other more serious problems like shorts etc.  The open market for vintage tubes was a crap shoot.  Now I only buy from respected dealers who thoroughly test their tubes.  I don't sell as a rule but if I  would be open and tell the buyer as much as I know.

Sophia Electric blue.

get the black carbon Shuguangs, recently released.