Most Musical 6NS7 tube for a Preamp?


A request for recommendations by those with experience with different 6SN7 tubes.

My system so far is a Pass Labs XA25 SS Amp, and a circa 1988 Tannoy FSMs.
The speakers operate at 4 ohms with a 94 sensitivity.

The room size is medium. Acoustically well treated.

I listen at lower volumes 60-75db. Vocals mostly.

I am looking for the most musical preamp, with a remote.

Budget is $3k. Used preferred. Better value.

Not considering anything from Schiit Audio.

Considering- Supratek Chardonnay.

Any other suggestions?

Tube Ideas?

Thank you!
chorus
I have about 15 pairs american NOS 6sn7 .  Alot of them were microphonic and the tubes that weren't microphonic still gave me tinnitis, - listener fatigue, headache

I tried Electroharminix new tubes and all is good now.  Same extension
I'm using an Aikido Octal preamp
Maybe I should run my WE6SN7s for a while to see if the bottom end comes around. So far the Pavane CV181s bests those for good bass, mid bass. 
I ended up recently selling my XA 25 and replacing it with the INT25
which is en route to me as I write. 
After much consideration I felt the same maker match was the 
most prudent way to go.
Of course I lost an avenue to tube sound.
I do also want a DAC upgrade from my Oppo 205
so I hope to land an R2R Day with a tube or two inside.

Thanks to everyone who provided their experiences.