Elrog 300B vs Takatsuki 300B tubes

Thank you all for your informative discussions.
I have a Lampizator 7 and leaning towards the purchase of the Elrog ER 300b.
Off topic. If I purchase the Elrogs with a credit card that has extended warranty protection, I am able  to extend the manufacturer's warranty coverage by one additional year.  If it fails after 6 months or thereafter, will I be covered? :  )

I promised to post periodically on my 2nd pair of Elrogs, so here it is. One of the replacement tubes failed today unfortunately. The past week that channel would go silent  sporadically and then sound would return. When I turned the amplifier on today the tube in that mono block didn't illuminate, it was dead.   Very disappointing to report this, but that's the reality. I put in my EML XLS and they are just cruising along as usual.

I had the highest hope for the Elrog ER 300 given there superb sound. I have to realize that the Elrog just may not be the right tube for the Coincident Frankenstein. The EML and Takatsuki in terms of reliability are the better match. The EML is a very robust tube and appears to be ideal for this particular amplifier. Mine are 3 years old and test exactly as they did the first day I got them. They are sounding excellent right now, just not quite as good as the Elrogs which were near magical.

With all factors considered the EML XLS is going to be my "work horse go to" 300b. It just seems made for the Frankenstein's operating parameters with its rugged tube internal construction and higher current capabilities. People using the Elrog is DACs or different amplifiers may hopefully have success with these tubes. Well I took my chance with this special tube but apparently it wasn't meant to be.
Charles,

Sorry, meant their (not there) superb sound.

Charles, very sorry to hear that your replacements did not work out.  Mine are still OK, but I am getting very little listening time in these days.  Less now than when I was working.   I suspect that you have drawn the right conclusion.  In the event my replacement tubes fail prematurely, I will probably also go the EML route.

Charles,

Wow, I'm really sorry to hear that one of your Elrogs has gone bad. It sounds like a repeat performance of what happened to me. 

Perhaps there is some hope on the horizon in that a "new batch" should be to George any day now..... Well I hope anyday now since shipment was to be made two weeks ago. He told me that these were supposed to be even better than the batch from which mine and perhaps yours came from. 

Since yours are within the one year warranty period they will undoubtedly be replaced with some others. I guess you can choose to use them and roll the dice once again or just resell them "as new".  

How do the Taks compare to the EMLs?  

Hang my in there my friend,

Scifi