Any recommendations for preamp tubes for SVT III?

[Edword]

Did some troubleshooting, and finally stopped a scratching noise coming through the speakers by switching the 12ax7s in my SVT III with some that I "borrowed" from other amps. I'll need to get some new ones so I can put the borrowed ones back, any recommendations for particular brands? It's an SVT III non-pro.

TIA

[B-string]

Sovtek, Mullard, TAD, Genalex, NOS RCA, GE, Sylvania.

[Edword]

Originally Posted by B-string

Sovtek, Mullard, TAD, Genalex, NOS RCA, GE, Sylvania.

I bought a mess of (IIRC) JAN Westinghouse 12ax7s years ago, but now I'm down to the last ones. The SVT III sounds good with them, I'll see if they're still available.