Years of buying mostly (6550C and KT88) Sovtek, EH, etc etc my favorite is JJ. Great price, great sound, great reliability.
Always bought from tubestore.com but the worst sounding and least reliable (2 out of 5 blown inside 2 months!) were their Tubestore brand name tubes. They replaced them under warranty but when it gets to the point you are worried to have your amp on unless you are there to keep an eye on it.... never again.
Always bought from tubestore.com but the worst sounding and least reliable (2 out of 5 blown inside 2 months!) were their Tubestore brand name tubes. They replaced them under warranty but when it gets to the point you are worried to have your amp on unless you are there to keep an eye on it.... never again.