Your NOS tube favorites.

@2psyop 

I have always wanted to try Mullards...and Telefunkens

Assuming you mean 12AX7/ECC83 tubes, Mullard are warm and even a little dull compared to the transparent and detailed Teles.

...with Mullard M8137/CV4004 box plates even warmer and creamier.

I have always wanted to try Mullards...and Telefunkens

They're polar opposites, but both are excellent in the right circuit.
There are quite a few types of Mullards, this is a situation where the most expensive are the best. MC1 (nearly extinct)  and the longplate square getter.

My favourites always seem to be expensive:

Tung Sol 6SN7GT/ VT-231         Black Round Plates.
Sylvania JAN-CHS VT-231.
Amperex (or Philips) 7308 PQ.
Tung Sol 12AU7 Black glass.
Brimar CV4004 Boxplates.

I wouldn’t say the Mullards are dull. During all these years Mullards made many different types of 12AX7 or 12AU7, and many others.
The 50’ Mullard is not the 70’ sound. The short and long plates doesn’t sound the same also. Same thing for the Military specs etc etc etc.MC1, MC2, MC6, I65, I63, I60, CV... , M..., All have ther own sound. None ot them sound bright or ananlytical (I think).
The way you melt your different tubes in your gear is the key fot obtaining the sound you like the best.