Well, thanks to a customer coming up today and bringing me a couple pair of tubes to play with, I was able to finally hear a pair of Pavane 12AU7 tubes along with a pair of TJ Full Music 12AU7's.
I did not have a lot of time to do a true thorough evaluation but do have some thoughts. Please note that these are only quick impressions and a more timely evaluation will be performed at a later date.
First the system. The tubes were rotated in the pre-production Purity One linestage, amplifier was an Audio Analogue 100 watt dual mono solid state. Source - modified Jolida JD100 with Svetlana 12AX7 tubes. Speakers were Salk HT2-TL (non-RAAL ribbon). Interconnect and speaker cables were all Clarity Labs Harvest II with VH Audio AIRSINE and Flavor 4 power cords.
The Pavane tubes were very clean and detailed. In comparison with I have been using, they seemed to be a bit recessed in the upper midrange, lower treble. All the information was there but not as apparent. The lower regions were also clean and detailed but a bit thinner sounding. Again in comparison to my tubes.
The TJ Full Music tubes were similar in regard to the detail but with a slightly fuller sound. The upper midrange, lower treble appeared to be slightly recessed but not as much as the Pavane. This could be a perception due to more body so I cannot say for sure.
Between these two tubes, I did like them both very much when it came to the level of detail they provided but with limited time to listen and really set the system up for a proper, time consuming evaluation, I will have to wait for another day to give a thorough report.
What I can say right now is that I was impressed enough to want to grab a pair of each for further listening.