The next logical question in the journey is how do I know when a new piece of equipment has moved the needle on my sound?
For me it is an easy answer. It was when I heard music that I have listened to my who life that I thought I knew and it now is sounding completely new to me. You start re discovering old music because you are now hearing things you never did before. Perfect example for me is Dire Straits. I always thought they were just s so so catchy band could take or leave. Well re discovering them on my new gear is like finding a new secret band I never new of. This continues as I am enjoying music and artists I never would have in the past. It is not my taste changing either as I still enjoy all the music I like before just find my enjoyment is expanding greatly.
Enjoy the music first and keep looking out the window along the journey, you never know what you will see round the next corner!