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

Guys,

Posting here after a long, long time being a silent observer of this thread over the last few days.

But thanks to all of your comments, I too have made the decision to get a pair of the Elrog's, to hear these sonic qualities.

Mine are supposed to be the batch from the manufactured lot in August.

The Aussie distributor has been kind to run them in for 75 hours before I try them as that was his recommendation.  

Pick them up tomorrow, so hopefully the festive season will sound better!

My good friend  Jeff (Jwm) installed the new  cathode resistors in my Frankenstein amplifier  yesterday and they  didn't change the sound of the  amplifier at all. That's a relief, now I'm waiting for the replacement Elrogs from George (tubesusa.con). He said they're coming soon. 
Has anyone tried the Elrog 211 tubes- Looking to change from the GE211( one going bad) on my Wyetech Topaz-  Roger at Wyetech said he doesnt think i will notice a difference in sound from the GE??
I've  installed  my replacement Elrogs in my amplifier today .  Needless to say that they sound divine. I hope the cathode resistor swap is the answer for tube longevity in the Frankenstein MK II. Time will tell. 
Charles,