Amplifiers:A Keeper for Life. Do you know of one ?

Just wondering, with this audio merry-go-round of buying and selling, if anyone has an amp that will be a keeper for life. I haven't yet but came verrrry close once...
with an ARC LS5mk2 preamp. Tube/SS heaven for almost 9 years
now with not a single itch for change. Only music matters now.
Okay, the follow up to the V4 is here in the form of a pair of Bruce Moore Custom M 120 amps. Yo can run in regular or Triode or "partial triode" mode at full power. These use the marvelous Citation Transformers. In triode they are mezmerizing.

I am sure I will own many different amps, but I will never get rid of the Marantz 8B that my father bought 40 years ago. The fact that the Mullard tubes that are currently in it are still working certainly does not hurt.