I use NOS tubes.
Rectifier: Amperex GZ 34 similar to the Mullard ,the earlier ones with the double d getters are better then the later year ones.
They should last a long time, worth every penny.
Regulators: Sylvania 6F6g or GEC Kt-66 both are real nice. The 6F6g have better bass and are little warmer. The Kt-66 have more clarity in the mids & are more extended in the treble. Both are excellent, with warmer 6sn7's the KT-66 , with more neutral 6sn7's the 6F6g.
Drivers: Tung Sol round plate black glass (expensive but one of the best all around 6sn7)
Sylvania 52 bad boy with the 3 hole plates and copper post ( if you like the VT231 black plates you'll love these, much better bass with the same beautiful midrange and highs)
Sylvania 6sn7w (dynamic,slam,detail,sparkly highs)
These are my 3 favorities, but also use Rca grey glass & NU black glass when I want a more romantic sound for Vocals, etc.