The Past 5 years

Digital advances, especially in the very hi end cd players, seem to be closing the gap between analog and digital. Playing cds are getting closer to sounding like vinyl. Not there, of course, but the gap ain't no Grand Canyon anymore...

In digital, the high-end stuff has actually changed a great deal in my opinion.

I vote digital!

I'd guess digital, especially in amplification.

I agree with Jaybo. Some of my earliest cds are a literal pain to listen to. I'm having trouble thinking of a recently released cd with the terrible harshness of some early cds.