Best 300B tube

Hi, same driver and input tubes. I replaced them before with a NOS Mullard (1962) and a NOS Sylvania (1960). It was an upgrade of course, so then I went for the 300B tubes with the same goal.

DeKay: Thanks a lot. Same as you, I'm looking for rich and warm sound. I'll analize your suggestions.
Thomas: As you say, the 2Qute synergy would be part of the problem too. Thank you!
Noromance: I read that review and thougth the Genelex was best buy. Thanks.

Chris: thanks for the advice. I'll check de Psave. I realize is a matching dilemma.

Dave: No doubt 432Evo would be an excellent upgrade, but its price is more than EUR 11,000. 2Qute was EUR 1,200 and when I compared conneted to a Mac Book Pro the sound was absolutely better than de EUR 600 cd player that a I used before. By the other side, if Mac as a source with Audirvana were low level option, why many brands use that combination to test their products in High End events (Tannoy Prestige series for example)?

Thom and Verdantaudio: Think you are right. The sound I like is JJ. Because I read very good coments about TJ Full Music, Genelex and KR Audio was curious of an upgrade, especially after good experience replacing 5687 and 6922. I reduced the brightness of the TJ Full Music changing the treble energy in the Tannoy Turnberry speakers from 0 to -1.5. It works, but I think because the sound was similar to JJ again. So I'll try de Psvane. And the Chord 2Qute is very analythical, yes; that's why I'm thinking to buy a MCRU Power Supply (change per other DAC is little over my budget right now). Thanks a lot.