Telefunken Smooth plates, Brimar Square Getter long plates, NOS Tesla ECC802S ( not JJ ), Tung Sol Black coated glass.
Personally, I love Mullards made between 1950-60's, but you may find them to warm?, however thats not the case for my taste.
There are many variations of ECC82 you can choose from: 12AU7, ECC82, ECC802S, CV4003, 5814A, 7316 and M8136
Check up here, very informative website
https://www.tubeworld.com/12au7.htm
Good luck
Personally, I love Mullards made between 1950-60's, but you may find them to warm?, however thats not the case for my taste.
There are many variations of ECC82 you can choose from: 12AU7, ECC82, ECC802S, CV4003, 5814A, 7316 and M8136
Check up here, very informative website
https://www.tubeworld.com/12au7.htm
Good luck