It is unfortunate if the Elrogs turn out to be unreliable and the problem is never fully cured. I would certainly only buy this tube from a very reliable source, such as George Lenz of TubesUSA.
The vintage Western Electrics as well as the more modern ones that were made up through the 1990s were extremely reliable and very long lived. I know a of a lot of people who have used them for MANY years without a failure or the tubes growing weak (the only problem with the newer tubes that I saw myself had to do with poor gluing of the tube to the base (easily repaired). It is quite unfortunate that production has not resumed on this tube.
A local dealer, who has an exclusive custom builder building his house brand of electronics, insists that the older Western Electric 300Bs with "engraved base" are the best 300Bs. He actually puts them into working amps (not kept as museum pieces), but, the price of these tubes are really prohibitively high for all but the craziest and wealthiest fans of the tube. He even has a 59A amp that uses a tube that is similar to the 300B (a 252) that is unbelievably rare--the amp is fantastic sounding.
The vintage Western Electrics as well as the more modern ones that were made up through the 1990s were extremely reliable and very long lived. I know a of a lot of people who have used them for MANY years without a failure or the tubes growing weak (the only problem with the newer tubes that I saw myself had to do with poor gluing of the tube to the base (easily repaired). It is quite unfortunate that production has not resumed on this tube.
A local dealer, who has an exclusive custom builder building his house brand of electronics, insists that the older Western Electric 300Bs with "engraved base" are the best 300Bs. He actually puts them into working amps (not kept as museum pieces), but, the price of these tubes are really prohibitively high for all but the craziest and wealthiest fans of the tube. He even has a 59A amp that uses a tube that is similar to the 300B (a 252) that is unbelievably rare--the amp is fantastic sounding.