Tube vendors.

After trying E-Prey, Upscale Audio, Tube Depot, Viva Tubes and some dude on USAM, the only issue ever encountered was with the Tube Depot. One tube, of the pair, was not up to snuff. The Tube Depot rectified the situation in no time flat. 

Regarding TC tubes, a copy/paste from a previous post: "My last octet of NOS GE 6550As came from TC Tubes. When one finally went South(after a couple years), they managed to find one, in their inventory of too-weak-to-sell-NOS, that matched my seven well-worn, and gave it to me. Didn’t even charge me, to test those seven. That’s service!"                                                                                                                                              For honesty's sake: At the same time time, I was ordering a quad of Russian repop, Gold Lion KT-88s, for listening tests.                                                                                                                                    Still: Gotta love those guys!

Vintage tube service is the best tube seller.

@eichlerera 

Vintage Tube Services:The Best!
By quite a large margin....

In what ways are they better than others by "quite a large margin"? And better than whom, specifically?

Please give details, as this might be a reason for me to switch suppliers.

i was always getting power tubes (6550c) from TubeDepot.
All sets lasted the same with no issues.