Do high dollar mono blocks truly improve the Sound Quality over the mid tier amps

With a focus on downsizing and having moved to Class D several years back, I have no practical interest in large heavy power guzzling amps anymore. That’s just me. To each their own. Especially when it comes to what look and sound happens to float one’s boat.

The other recent gamechanger for me is applying DSP for room correction, sound tweaking to personal preference, etc. I easily enjoy a lot of gear much more than I would be able to do otherwise were it not for DSP done well.

Practically, I am mostly off the equipment merry go round at this point. I still like trying new things, but it's now more because I just want to rather than that I need to.

Those are good amps. Cost alone means nothing. You can always change if you don’t like the amps for whatever reason: to try newer technology or a different design, a different visual look/aesthetic, measured performance, or whatever you please. That’s totally up to you. I just would never ever make a change based on price alone.

Also always a good idea especially with big ticket items to either audition first or be sure to have a cost effective way out if things do not pan out as expected.