Elrog 300B vs Takatsuki 300B tubes

Tom,
You can get them from Parts connexion.com, they're in Canada.

Bill,
Your use of the PS 10 is a very good decision.
I'm glad you're able to fulfill your goal of hiking in the mountains of Tennessee. Six pounds of belly fat in a week? That's some serious hiking, keep it up.
Charles,

Charles,  make that 7 pounds!  We are finally getting settled in enough that I can really pursue the hiking for all it is worth.  The hiking has been wonderful, and my wife has gotten back into it like in the old days.   The endorphin rush, the beautiful views, the company of my beloved, and the track of Bach's St. Matthew Passion running in my head eight hours a day is hard to beat.  By the time I get home, I do well to make it through dinner before passing out.  I have been hiking so much that those days when I don't are utterly consumed with volunteer work, yard maintenance (yes, I mowed my grass again 2 days ago dressed in shorts and a T) etc.  Perhaps there will come some icy weather, which is pretty much what it takes to keep me off the trails.
I have a stack of CD's sitting on my desk that I haven't had time to listen to yet.  While there have been a few surprises associated with the move, this decision has worked out even better than I had hoped in most respects. 

Charles, unfortunately one of my replacement Elrog tubes failed also. George is going to replace them once he gets a suitable pair in. 
 I'll be waiting for your opinion on the resistor replacement ,hopefully the sound won't be degraded. If it makes them last in our amps that would be great, fingers crossed. They are wonderful sounding tubes to bad we're having issues with them. 
Oh well, I put back the EML's and they sound very good with nice dynamics and drive, not as musical as the Elrogs but, I can easily live with them in my Franks along with the Taks.

Joe 

Bill,
Man, I'm so happy you and your wife reached your goals and are able to live out your dreams. This is what good planning and determination lead to. I know how good it feels to exercise and get back in physical  shape, there's no downside to this approach. Keep on exploring those mountain trails Bill.

Hi Joe,
Hopefully the  cathode resistor swap will be the answer, only time will tell. The EML XLS is a terrific tube and the past two nights they have provided me with very enjoyable listening sessions without question.
Although in direct comparison I'd choose the Elrog, it does not by any measure embarrass the EML. The Elrog is subtly better in certain areas that are noticeable at this very high level. The EML is a bit more dynamic (small margin) and has a very lively energetic presentation with very gone tonality and timbre. The Elrog is a bit more organic and as you note nuanced. Bottom line the Frankenstein sounds really good with these two tubes as well as the refined Takatsuki. The EML is a superb value given its performance/price ratio and its excellent durability.
George Lenz told me recently that some long term owners have reach 40,000 hours of use with the EML XLS and they still are testing like new. Now that's impressive!
Charles,