joessporster, any time you are ready
Here is my take on my favorites in the VRD's:
CBS 7318 (12AU7) - nice all the time and for all music. It just does the job with tone and composure.
Valvo Long Plate 12AU7 (ring getter, various D getter with and without foil strip) - the most resolution without any brightness. The different versions have slightly different sound, but all pretty close. This is my preferred tube in the 12AU7 slot currently. Image focus is spooky and huge! This is the Audiophile 12AU7. It does everything better than the Telefunken, and with no brightness at all.
Valvo E80CC (12AU7 Sub but be careful. The heater current is much higher, although plenty safe in the VRD's) This tube makes images huge. More forward, but everything is in the room. Very cool sounding tube to roll in occasionally.
The 10M Mullard 12AX7 - Big, warm, slamming, focused, tons of drive. This is THE tube to put here, and yes, it is MUCH better than a standard Mullard that looks just like it. I don't know why, but it is.
Sylvania Triple Mica Grey Plate 5751 (12AX7 Sub) - My second favorite, deeper soundstage, very quiet, nice focus and detail. A delicate/intimate sounding tube. Black plate version is about the same, just less warmth.