Favorite 300B: Sophia vs KR

So maybe sacrilege but have a push pull 300b tube amp (actually on the way its 23 watts of power). It runs four 300b's. Comes with EH 300bs. I also have a 300b set with Full Music se 300bs which are very nice tubes but only 2 of them so you can afford the luxury. So 4 of the high end 300bs is going to set me back at least $1,000, maybe even $1500. Yikes - what do I do - will play with the Eh's for a while but know I am already scheming for some Sophias or something else.....? Is there a budget tube that will give me what I need out of my new amp?

Ladavid , The svetlanas are the real deal at around $ 325 a set , these are my new reference replacing EML xls , create/synergy , EH , Black treasures and full music carbons.

one of the things I always wonder about with 300b's is how wide the gulf is between various manufacturers. Prices vary wildly - is something like a Electro Harmonix to Svetlana to new Royal Princess a $700 gap in terms of value and sound. I know only my ears can tell me the answer to that questions so a bit rhetorical.

@Ladavid

Probably quality of material, process and control procedure, but also the quantity. For example, Shuguang, TJ and maybe EH manufacturing like 500 valves a day, maybe more, but KR, EML or EAT manufacturing like 500 in month, all hand made, from start to the end, that's the difference.

As for the sound, I never tried any cheap Chinese or Russians so far, so, nothing I can tell here.

"So maybe sacrilege but have a push pull 300b tube amp”

Ladavid,
The 300b is a great tube and no less so because it’s used in a push-pull amp.
Given the money I had just sunk into my amplifier when I acquired it, I decided to stay with the stock tubes for a while. Since then, in addition to adding the Sophia Royal Princesses, I upgraded the small tubes with the best that I could find. In my system, the improvement has been so great that I wish I hadn’t waited.

It might be somewhat more challenging to find 300b tubes for push-pull amps, like ours, because most 300b tube reviews are conducted with SET amps. I have been advised that the findings in those reviews might not coincide with ours, using push-pulls.