Best sounding 6SN7 VT231 for amplifier input

Jeff;
Please add to your list Ken Rad Vt 231 & NU 6sn7 (both black glass).
Those are most romantic and sound awsome in my BAT amp.

Regards, Jack.

I'm using Sylvania in my SET amp. They sound great. I think Sylvania has the most transparent and twinkly high end.

in my amp:

--Kenrad (vt231) black glass = BIG, lush sound (but still open, unveiled), bass bloom, music full of weight, the BEST in my amp (but NOT in my preamp!)

--sylvania vt231 = sparkling (like TWL said... "twinkly") up top, crystal clear, extended

--sylvania 6SN7W (NOT the metal base) = also transparent, a little thin, tight bass

--tungsol, blackglass round plate = neutral, balanced, SMOOOTH (perfect in my preamp)

RCA grey glass vt231 = lush, but also veiled/dark

national union black glass vt231 = very similar to kenrad, but a little more veiled (still very good)

GE 6SN7 GTA = good all-around neutral tube, much better than stock/chinese tubes, nothing totally outstanding about it