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
Bill,
Our music taste is different yet the Elrog conveys the essence of these indivual genres wonderfully . Germanboxers has a system of entirely different components and yet his impressions are as enthusiastic as ours. In the end I just acknowledge there will be inevitable differences of opinion.
Has anyone heard or had experience with Elrog 300b tubes failing? I was very interested to get a pair but heard this from one source -cannot confirm it is true or not. Thanks
The reliability problem seems to be fixed about a year now. I own them and have no problems at all.