IME New production output power tubes are better for certain models, but for signal tubes (ie, 12AX7 or 6SN7) NOS is always better, and they make a very big difference, different flavors and its tough to know what you will like, it is like asking which is the best cartridge...
Now, since tube rolling is not a new thing, usually higher priced tubes are better (no wonder)...
I would agree with Mofimadness start with Tung-sol and Sylvania
Now, since tube rolling is not a new thing, usually higher priced tubes are better (no wonder)...
I would agree with Mofimadness start with Tung-sol and Sylvania