Hello Sir,
Over the last 15 years, I've had the opportunity of hearing lot of nice tubes in my rigs, including many greatly over-priced NOS EL 34 offerings from Amperex, Mullard, and Telefunken.
Personally, although I found the NOS tubes a step up, again, it's just hard to justify the prices as we all are noticing.
In any case, in my humble opinion, a tube that's still quite reasonable in price and sounds wonderful across the spectrum is the NOS Matsushita tubes made in Japan.
Morever, they still show up here and there in NOS form for about $25-$30 a tube. If possible, I suggest you give them a try if they fit your budget.
God bless and have a nice holiday season,
Paul