I have downgraded several times in the last 30+ years. Though I cannot say that I got better sound, I can say that I have gotten pretty damn close for a lot less money.
I'm very happy with my current system, and I've pulled over $20K out of my system after expenses, for other life choices.
I've found that with tube rolling, and careful selections with power cords/cables I'm up to about 98% of my former rig's sonics for about 65% of the cost.
Cheers,
John