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
Fla,
Based on Matthias's favorable comments you're fine with the standard Elrog ER 300b.
Charles,
Hi Matthias

Thank you for your help. I called Cary...and the newer version of the 300SEI actually runs 11 watts (they say) and 400V on the Anode - 35 watts ...so if I understand correctly the ER 300b should be able to handle this easily.

Again many thanks

Robert
As a fellow Coincident Frank mk2 owner, I'm a bit conserved for
My regular EML 300b tubes, I mean, should we consider only
using 300b XL type tubes from now on?