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
 Like others my go to has been the bulletproof EML and previous to that I did use the Sofia RP, they sounded great like others have reported one can fail prematurely and leave you with a chalange finding a match.

I see the Elrog’s are still for sale, curiously has anyone revisited the Elrog 300b and has the reliability issues been sorted out?
@ianderson  I have had new Elrogs, purchased April 2018, in my amplifier running almost daily with no issues. Under new ownership, the QC issues seem to have been ironed out.
I have new Elrog 300Bs in my SET monoblocks with about 500 hrs on them without problem..great tubes..