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
Hi Charles,
Now that you have more hours of listening, did changing the resistor degrade the sound in any way using the EML XLS's, Taks, or Elrog's?

Best,
Joe
Hi Joe,
I don't hear a difference in sonic character at all and I was really listening intently for any changes. So, none that I have noticed. 

Markus, for a tech this is very simple and straight forward. The resistors are right there and very easy to remove and replace. It took my friend 5 minutes per mono block to complete the job. Fortunately the Frankenstein is easy to work with,ample space and few  parts (very uncluttered ). I used Munford 1.2K ohms/25 watts,  2.50 dollars each(1 resistor per mono block ).
Charles, 
drdavid..i have Psvane WE 845s and 300b tubes and could not be more happy with their performance. sorry about your experience with the Royal Princesses.I used mine for a few years and never had an issue. i still have them as back ups..Anyway....the We's are just superb..
Calloway, 
I had a borrowed pair of Sophia RP  in my amplifier for several weeks a few years back and they were very good sounding although not as good as the Takatsuki.  So what you write is high praise for the  Psvane W.E. Replica 300b. I use W.E. Replica 101D  my Line Stage and it's a superb sounding tube unquestionably. I've heard their 845 and it was also superb. 
Charles,