Tubes


Im looking to for replacement tubes for my Mastersound 845, 2 of each

Tubes in question: 6SN7 845 ECC802

I bought WE replica 845 from PSvane   

now I need 6SN7 and ECC802 

I saw new 6SN7  Tung-sol on eBay for about 50$ for pair. There are also vintage Tung-sol on eBay. Not sure how to proceed here. Is eBay a reliable source for tubes? I like their quick shipping and confidence in returns in case something is wrong.  What other sources are reliable for aforementioned tubes? 
ei001h
I've bought lots of NOS ebay tubes from reputable dealers with return policies. The new stuff I get from Viva or other reputable dealers. Not a big deal. 
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PSVANE 845 WE replica from a trusted Ebay user with a solid longstanding 100% feedback turned out to be mistake. Very noisy tubes probably at the end of their life. I requested a refund. 
How are the Shuguang 845 C from Upscale audio? Are these better than Chinese Electron 845 that come standard on many amps? What about compared to PSVANE and other brands? Anyone with experience ? 
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