Part of joining a club ("marble collectors") is fitting in, at least for me. That means imitating to fit in and to learn. So I caught on immediately that Akro and CAC were hot. When I dug through my first lot, it contained several minty Vitro black lines with gorgeously vivid colors. My eye was pleased, but my brain intruded like a nagging step-mother, "But those aren't CAC or Akro. What's more, they're not that old."
I remember when I found my first Popeye, I felt I had arrived. It was like a merit badge. But I was not all that excited about the marble itself. My excitement had more to do with its present monetary value and its scarcity, rather than its aesthetic qualities.
Now I've matured and learned that while scarce might mean valuable, it doesn't necessarily mean beautiful. To really collect what you enjoy you sort of have to not care what others think and become like a child, who knows nothing of the value or the history, and just enjoy them for what they are. Your eye will grow keen and the nagging step mother won't interfere with you anymore.
So yeah, I've got some nice Popeyes I'd be happy to trade at the next marble show for Vitros...oh wait, hardly anyone brings Vitros to the marble shows...