I like rule #1; but that's about it, from this list. Chris' "hearing as many different systems" would have to be modified to "owning,same"/for me.
Trying horns and set amps taught me a lot. While horns and set-amps have their pros and cons;they taught me a lot about what my previous system wasn't doing. BUT, I had to live with this system for a while and experience it. What I had before set me up for this experience--then what you gained from this helps you on the step after. I guess many don't have to take the baby steps I require. While I am quite happy now, I don't expect I have reached the end of my journey.
Trying horns and set amps taught me a lot. While horns and set-amps have their pros and cons;they taught me a lot about what my previous system wasn't doing. BUT, I had to live with this system for a while and experience it. What I had before set me up for this experience--then what you gained from this helps you on the step after. I guess many don't have to take the baby steps I require. While I am quite happy now, I don't expect I have reached the end of my journey.