Favorite TAD 6L6 for Mesa Mark? 6L6GCM-STR, 6L6WGC-STR, 6L6GC-STR? Redbase or Blackplate?

[Jakem]

Hi,

So what is Your favorite TAD 6L6 for Mesa Mark IIC+ or IIC++? Based on some searching and reading comments quite a few people love the old STR415s. Anything that comes close? Other options?

 

[Exo-metal]

The Sovtek 6L6

 

[peterc52]

I used redbase . Those sounded great and no issues. They will also match the Mesa-color you want

 

[Jakem]

Anyone tried the blackplates? Svetlanas and Tung-Sols seem to be available as well.