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The Gold Lions are nice.

I have quads of GE, RCA, and Ken-Rad domestic and 2 different styles of RFT Germany 12AU7s that are under your budget.

I have some Sylvania and Raytheon pairs and trios, but no matched quads that would also be well below your budget.

My Amperex/Valvo/Mullard/Siemens/Tungsram varieties aren't going anywhere anytime soon.  ;~)

Enjoy.

Awesome! Thank you!

I’m running the M-125 monos and the gold lion kt88’s made them come alive.

Are you running GL’s in the driver stage also?

You should check out Brent Jessee Recording,  great source of NOS and he has some real sleepers that won't break the bank.   I got some really good early 60s RCA 12ax7 and Philips Miniwatt 6922 and they were everything he said they would be .   His website is a great source of historical info on NOS.  

Jim McShane is a good source too,  nothing but positive comments about his restoration services and tubes on every audio forum.   I haven' t used au7s in a long time but stay away from the later production sylvania nos... mazda cifte 12au7 that I tried other than modern production and they were great.