I know of some folks who just picked up some of those new GL 12ax7's and I am waiting to hear from them regarding how they sound.
I use the Tungsol's and the Tele's in my preamp at the moment.
The Pavanes caught my eye too. Two other tubes that I'd like to investigate down the road for my phono stage are the reissued GL 12ax7s and a new Sophia mesh plate 12ax7. The latter isn't available as of yet.
IMHO, there is a crying need for a decent 12ax7. When cj ran out of their old Ruskies, they switched over to the new Tungsols that I really don't like. Problem is that they're the best sounding of the lot and cj can get quiet tubes, something that's far from a given with either NOS or new tubes, esp. in the phono section. Currently, I'm using the Tungsols in the 'critical' position in the phono section (where noise is a major consideration) and using a Tele 12ax7 ribbed plate in the 'non-critical' position. So much better it's not funny.
One of my Shuguang Black Treasure 2A3's finally bit the dust after 2 years. The other one is still going. I got them from Grant Fidelity. They replaced the KR 2A3's that were original equipment in my amps - and which I had gone through a couple of replacement sets. I really liked the sound of the Shuguangs, and at about $400 were just over half the cost of the KR's. After reading about the new Pavane (aka Psvane) T series tubes that Grant has just started carrying and the issues with the Shuguangs, I have ordered a set of the T series 2A3'a, at slightly less than the Shuguangs. Should be getting them next week. Right now I have my remaining black Shuguang on the left amp and my remaining good KR on the right. Will post how the new tubes sound - Grant says to burn them in for a couple hundred hours to reach their best sound.
One of my Shuguang Black Treasure 2A3's finally bit the dust after 2 years. The other one is still going. I got them from Grant Fidelity. They replaced the KR 2A3's that were original equipment in my amps - and which I had gone through a couple of replacement sets. I really liked the sound of the Shuguangs, and at about $400 were just over half the cost of the KR's. After reading about the new Pavane (aka Psvane) T series tubes that Grant has just started carrying and the issues with the Shuguangs, I have ordered a set of the T series 2A3'a, at slightly less than the Shuguangs. Should be getting them next week. Right now I have my remaining black Shuguang on the left amp and my remaining good KR on the right. Will post how the new tubes sound - Grant says to burn them in for a couple hundred hours to reach their best sound.