This is the very best 12AU7 type I have tried and I have tried a TON.  I am willing to put this one up to "any" 12AU7/5814 type on the market, period.  Tested in both extremely high-end and very lowend/budget stuff, and the tubes just work magic.  Don't ask me, ask the tube!  These are the two mica, gold pinned ones.  The three mica is a good tube, but this is the very best.
$80 or best offer for a pair.
Thanks!