Ranking Accuphase Integrated Amps?

The Accuphase integrated amps have gotten my attention lately. I’m curious how these rank according to sound and build quality (and relative to era). Which models have held up over time and continue to receive praise? Which ones are considered to be of lesser quality?

If there are any Accuphase aficionados here, I’d love to know your thoughts.
Bought an E-650 a couple of months ago....excellent sound, built like a tank...30 W Class A and it drive my Paradigm Persona 9H speakers very well.So far no complaints. No experience with older models but another "audio aficionado" site has a separate Accuphase thread, with ton's of long term users.