Your Forever Pieces? What and Why?

McIntosh MR74. Luxman T110.  Both upgraded by Don Scott about 10 years ago. 

Tandberg 3014a and Nak Dragon.  Bryston 14b3 amp. 

Stax tube-driven headphones (Lambda Signature and 009 phones); Sonus Faber Electa Amator speakers, and Nakamichi cassette deck (RX-505). All owned (except Stax 009s) since the early 90's.

Judging on how long I've owned them:  My Conrad Johnson Premier 12 tube monoblock amps.
I bought them in the late 90's as I remember and they've been my main amplifiers since.  Such a hard to find combo of tube lushness yet focused, punchy and well controlled from top to bottom on whatever speakers I put on them.

I've had my amp since 2005 and preamp since 2006 both custom tubed pieces from Deja Vu Audio. Recapped the amp about 5 years ago and it sounds better than ever I don't see replacing either anytime soon.