primosounds
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You mean Chinese made ceramic sockets. I use usa amphenol and ef johnson ceramic sockets all the time. Even used ones are often better than current made. The chinese made have very poor tolerances. I had one socket that i found that a misindexed tube could still go in far enough like it was in properly and operate. So, you can't install a tube by "feel" with those ceramic sockets, inspite of the pretty gold flashing .That's what I've taken to using, in my "higher end" projects.
The only ones I categorically will NOT use are the ceramic sockets. They are bad for transmitting mechanical noise to the tube, and are also rough on tube pins (any mis-alignment of the socket pins puts a lot of stress on the tube pins- which can, in worst case, actually crack glass-base (miniature) tubes! They don't sound good, and they might damage a tube- no thanks!