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
Charles, I resent my reply to your PM.  The physical conditioning is coming along, but I'm still not where I want to be.  If I can continue hitting it hard, another couple months and I should be there.
I'm following the fuse thread.  I will probably order a black for the CSL in a week or so.  
Bill,
I don't think that you will regret that purchase. Let me know what you think of it.
Charles, 
Charles,  It looks like the fuse in my CSL is a T7AL, which is a 7A slow blow.  That seems like a lot of current for a preamp.  Is that what you ordered?
Bill,
My CSL  has only a single 3 amp slo blo in the rear panel. 7 amps is really a Hugh value. The Frankenstein uses only one 3 amp fuse per mono block. 
Charles,