I don't even have the T1 from the group buy yet but I already have 9 tubes with one more type on the way.
I'd suggest making this group buy for:
- Electroharmonix 6922 Gold Pin
- Genalex Gold Lion
- JJ 6922 Gold Pin
As stated, the "Upgrade" T1 already comes with the EH6922 tube.
The Sovtek 6N1P is not well regarded and is more akin to the stock 6N1P Shuguang tube that comes with the basic Aune T1.
I also misspoke. Ei is unfortunately no longer making tubes.