In terms of sound quality, reliability, and holding it’s value McIntosh bested them all.Your opinion, to me the sound quality went south, when they introduced output transformers for ss amp, which as you say made them, "at least" bomb proof.
One of the best Mac's ever made.
https://upload.wikimedia.org/wikipedia/commons/9/91/Mcintosh-MC275-glow.jpg
Cheers George