Musical engagement (i.e. does the music engage me or not, is my toe a tappin' or not, does it give me goosebumps or not). That type of thing. Not necessarily accuracy to the source until such time as all recordings are "musically" engaging and satisfying. Not until all recordings become accurate to the live event (which, IMO will never happen) will I want a perfectly "accurate" system.
Speakers: What's MOST important to you?...
When you demo a pair of speakers, what criteria do you use to judge the quality of sound? What must the speaker have or do that will bring out the check book or credit card?