Older And Wiser or just Tighter and Deafer?

If it isn't going to make a difference in your listening habits, and you have no known system weaknesses, I'd spend money on new content.

i.e. My recent switch from SS amp and SS pre-amp back to tubes has been a restoration of prior levels of enjoyment. 

i.e. my dual arm turntable project, (mix of vintage and new) addition of a dedicated mono cartridge, and willingness to properly clean my existing lps 10 at a time has made a significant difference, to both quality and enhancing enjoyment of existing content.

Donna, being home more and aware of the entire process over several months, is learning to listen like never before, and we enjoy more music together than ever.

If you look up Chapter 27 in Robert Harley's Complete Guide to High End Audio you will find the section on how to determine appropriate component budget expenditures adjusted for life expectancy. Be sure to use the current edition as the actuarial tables are updated each time. Absolutely essential if you're as serious about audio as I am. Gratuitous link to system to show how serious I am so you know this advice is legit: https://systems.audiogon.com/systems/8367

"Gratuitous link to system to show how serious I am:"

I followed your link.  You seem to be serious! :)

Or you could buy a used copy of Jim Smith’s excellent book on getting better sound - about ten bucks... lot’s of low to no cost things to try IF you enjoy the journey....

I have my parents Mc tube gear a handed down treasure for sure

I'll check that out.  Thanks!