Quieter 12AX7?

I recently received a set of Traynor YCV20-specific JJ tubes from
eurotubes, the "blues option." It included two 12AX7/ECC83S and a
ECC832/12DW7 that was intended to reduce some of the gain. Problem
is, the amp is noisier (hum & hiss) than it was with the OE preamp
tubes, although the drive boost has improved markedly and is no longer
so over the top. In fact, it is by far the quietest of the three
switching settings of clean, drive, and boost!

I'm gonna try some swapping but I'm also interested in knowing which
brand(s) are the least noisy preamp tubes, as per the header.

Thanks for any and all help with this.

Texas Pete
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