Right, but it’s always sad that when I looked at tempting products to replace the old ones serviced for 6-8 years they always have some kind of drawbacks holding me from pulling the trigger
That is what planned and intrinsic obsolescence looks like. You can't actually find products that are truly built to last mostly by design and economic reality since the Industrial Revolution that has for the first time in human history laid to rest ever demand outpacing supply in terms of production of goods. Perfect products only exist in the imagination, and ones that get close, in echelons of pricing that put the company making them at risk of going defunct.
Upper middle-class stuff I feel is the sweet spot for most things beyond performance (like vanity based, or requirements concerning warranties, or brand pedigree).
The idea of buying something with design of repair-ability in mind is becoming more and more of a relic. That might sound like some old-person talk (boomer talk I should say), but I'm not joking. It's not just literally designs aren't handled this way anymore, but even the judicial system of even allowing things to be repaired is being assaulted by industry lobbyists.
Folks like Louis Rossman as a basic business owner is actually trying to fight these pathetic fucking clowns in these industries sending out barely-literate messengers ("lobbyists") reading off scripts to legislators.
So not only is the boomer message of "ain't built like a used to be" a valid anecdote, it's actually sound, and can be demonstrated from points of psychology, historical precedence, economic perspective, and now legislative initiatives.
My advice? Don't sweat it so much, try and bite a bullet with companies that will seemingly be around, and will send you a shipping label to get your product in their repair facilities. (Or in the case with the apex efficient monster of planned obsolescence -Apple- they'll just toss your old phone in the recycling bin, and make you pay half price for a replacement, only after you pay the deductible, on the warranty you purchased at nearly half the price of the phone anyway a few years back, which you are hopefully still covered under).
What this advice wants to say in conclusion. Just get a Monolith 887 if you're this keen on a THX amp of around this cost.