I don’t even remember buying my pair of two hole, t-plate, bottom-gettered, VT-231 Sylvanias, or: ever having listened to them.
Must have been when I was going through that 6SN7 comparison from Chimera Labs, and trying everything on it (+), decades back.
BUT: when I bought Brent Jessee’s last matched pair of round plate Tung-Sols (my fourth pair), a couple years ago and found the Sylvanias hidden in my stash, I tried them in concert in my Cary monoblocks.
Nothing I’d tried before had given me the organics and sound stage depth of that combo.
They’re still in there!