Another vote for Jim McShane -- good guy and generally has very good prices. Also tube mmonger -- again, decent prices and some interesting tubes I don't see elsewhere -- such as the CV4086s I just got for my Eros. Brent Jesse is also very reliable, but tends towards the expensive side, and there is also Vintage Tube Services -- again, decent, but not bargain prices, and some of the most thorough testing and matching in the business. Those are my faves for top quality stuff and hard-to-find items, and some less spoken about versions of bespoke tubes.
HTH,
Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)