Absolutely love the ACME line myself. But the first Psvane I ever bought were the 12AX7 T-II, which got replaced by the S series, and that’s how I got into them in the first place. Psvane does make some subpar tubes in some variants and lines, but the 12AX7-S, the CV-181 T-II, the 6CA7 T-II and ACME 300B and 845 were the best of theirs that I tried.