Need advice for 2a3s driver tubes in Melody M845

I've got a pair of Melody M845 monoblocks and am in need of a pair of 2a3 tubes to use as drivers.

I've got a pair of Melody M845 monoblocks and am in need of a pair of 2a3 tubes to use as drivers.

I'm looking for something that is fairly neutral, with good top end extension and resolution, good overall detail, dynamics and drive. My system is voiced to the warmer, more developed side and I want to eek out a touch of top end shimmer.

The KR 2a3 is strongly recommended for this situation by ears I really trust, but they're devilishly expensive. He also recommends Sophia Carbon plate 300B 2.5v (for 2a3) but same deal on expense.

I'm thinking along the lines of a pair of JJ 2a3-40s, Shuguang Black Treasure 2a3s or Psvane Treasure IIs. I can find no information on the treasure 2s, and generally hated most things psvane, while loving everything black treasure I've tried, so I'm hesitant on that one.

I was also warned away from JJ due to quality control, which has been my experience in the past with many premature JJ failures.

Can anyone compare and contrast these tubes or offer similar alternatives that go for under $300 a pair?