@honeybadgertube Of NOS 12AU7s the Amperex "Bugle Boy" 7316 has gotten the highest marks in customer feedback. A good alternate is the Bugle Boy 12AU7.
In new tubes we've had good comments about the Gold Lion 12AU7.
No matter what tubes you get or where you got them, in all cases they should be vetted on a tube tester to make sure they test good, then auditioned for low noise, low microphonics and no crackling.