How do I know if my systems any good?

If u spend 100k or more I’d say you have a good system. 😂. Just kidding but seriously for me I’ve always had a good system that I really liked. But I was never satisfied. I always found faults in just about everything where it was true or not. I finally upgraded my amps to the Audio Research Ref 750s and my Ref 6 to 6SE pre amp. Hoping this will be the system that makes me completely happy. Also I am going to be working on my room next. 

Also I am going to be working on my room next.

Working on your room you may discover if you do it right WHY price tag of COMPONENTS dont give always a good system... But acoustic always give a way better system...

Getting rid of reverbs kind of important.

It's not rocket science

In acoustic reverberation TIME must be controlled not eliminated completely...

This "rocket" science is called acoustic...

Getting rid of reverbs kind of important.

It's not rocket science

If you have to ask this question in the first place.... but really cost is not the determining factor(s).  Synergy goes a long way.  Indicators: Goose bumps, Chills, jump factor, wow factor, or what ever terminology turns your crank.  Just have to listen a little longer, especially late at night.