Favorite 300B: Sophia vs KR

Addendum:

What about this Genalex Gold Lion PX300B tube?

Hi,
6 moons did a very detailed review of the Full Music SE and the Shuguang Treasure series with many comparisons to other 300b tubes. To my knowledge the KR tubes have had some reliability issues.

Hi Sakahara,
I've owned the KR's and found the sound wonderful.They made my system sound fantastic. The problem was that they are not reliable. One of mine failed with less than 100 hours on it. The manufacturer did not stand behind them, and wouldn't replace it claiming I was responsible!?You can check out the archives on this tube as my experience was not unique.
I have tried a number of 300b's. I had Sophia, TJ carbons plates and a few I seem to have forgotton. The best I have heard is the Shunguag Black Bottle (Treasures)that I have settled on. They sound as good if not better than the KR's, and are reliable. I must have 1500+ hours on them.
I do wish to hear NOS WE's one day.

Regards,

I think most of these current productions have reliability issues; KR. EAT,... even Sophia from personal experience. I also have a hard time believing those reviews that praise the much cheaper versions as much as those who can't accept the gushing over NOS WE. One can only audition for themselves, in their system, to know for sure. Its very subjective. I just didn't want to do that at this time. Difficult decision. I may go with Sophia. KR's handling of customers worries me.