Elrog 300B vs Takatsuki 300B tubes


Has anyone heard the Elrog 300B tubes ? I read an article which mentioned that the Elrog 300B delivers 15% less power than a traditional 300B tubes. Can anyone confirm that it is audible ?

I am choosing between Elrog and Takatsuki 300B tubes. I would prefer the Elrog because it is cheaper and supposedly wonderful but if it really sounds less powerful then I have to rethink.
pani
My friends Elrog 845 tube failed last month and took out a resistor. Not sure who he bought the tubes from but they are sending a replacement tube.
Jet,
That's the beauty of a forum such as this one. I know a few people took a chance and bought Elrogs, EMLs and Takatsuki based on(at least to some extent) my very positive comments. I feel obligated to report problems when they arise. Elrog said the earlier reliability issues had been solved, so I took a chance. With the replacement Elrogs I will post on their reliability as times goes on.
Charles,
I am waiting on a new matched pair of Elrog 211 tubes and will continue to report my findings here.

I also own the Elrog 300B tubes but am not using them while breaking in my new Coincident Frankenstein MKIIs. Will eventually report back when I start using them.