Linlai E 6sn7 tubes

The following is my latest update in the quest for the correct Linlai to buy. I sold a pair of the E-6SN7's in the gift box on US Audiomart. The buyer bought them no questions asked and said they were a bargain at my asking price. In just a matter of days I received great feedback and an email from the buyer. He said the tubes sounded great in his Don Sachs preamp and they matched the stock pair he was using. 

This confirms that Don's components use the Chinese market Linlai. Initially I had purchased the E-6SN7's directly from Don's supplier who in one of our email conversations said "say hello to Mr. Don."

Even though the "non Global" pair didn't work out for me, these are obviously what Don is using to great effect in his preamps. With that said,  I would still like to hear the Global Elite E-6SN7 only available through Linlai and Grant Fidelity.

@lowrider57  In discussions with a vendor for Linlai tubes, I asked about the difference between the "Elite Tube" and the "Global Elite".  He told me Linlai only makes one tube in the Elite series.  Claims the "Global" is nothing more than branding added to the tube by the distributor for the North American market.  Has anyone seen any actual proof that is is not the case?  I find it had to believe Linlai has created two completly separate product lines.  The "marketing" ploy would seem more logical.  I'm thinking of buying some Linlai tubes and would love to have this issue cleared up before I do.  

I doubt that there is any difference, the global branded tubes might be screened a little better is all the difference would probably be if any.

I find it had to believe Linlai has created two completly separate product lines.  The "marketing" ploy would seem more logical. 

@bigtwin  It is great marketing to make the Westerners think they are getting a tube made specifically for their preferences. And the higher price can also be a marketing ploy for Americans.

If you've read through the thread, many members believe the two tube types are the same. Adding the vertical logo to establish a different brand is easily done. But, earlier in this thread, photos show the two tube types have different bases. Why bother with this modification when a different logo satisfactorily separates the two brands?

I'm done speculating as to what Linlai is selling. The fact that Don Sachs uses the E-6SN7 from a Chinese vender is very telling.