Pacific Valve Dac 60...Tubes?

Bought a used pair of Amperex BB 6dj8. Very nice compared to the Sovtek.
Am still looking for the right tube. System composed of:
Squeezebox Duet
Dac 60
B&K Ref 20
Bryston 3bst
Gallo Ref 3.1
Sound with the bb is very nice on good recordings but on older Rock cd's it is a bit fatiguing. Seems I may need a little warmer sounding tube. Any suggestions?
Am looking at a pair of Amperex USA PQ 6922 but they may be out of my price range.
Thanks for any suggestions.
Steve

I have the GR Research Modded Dac 60 and it is a fine unit with the right tubes. I had a huge stash of 6dj8 family tubes. As nearly always the Amperex are favorites.
Amperex Orange globes- best top to bottom
Amperex BB- little warmer and more plump bass
Siemens chrome plates- great all around/ detailed and expansive but thinner than the Amperex
JAN Phillips- best bang for the buck- highs not as sweet as Amperex
Mullard - Toe tapping fun, warmer and little looser bass- Musical less detailed
NOS Ei- very good top to bottom but slightly less textured midrange
Ediswan- good all around but less spectacular than Amperex, Seimens, Mullard

Stivervii
Thanks for the list. Just bought a pair of Amperex Orange Globe. Anxious for them to arrive.
Steve

Good deal Steve- list the date codes here when you get them.