In my experience, the six-eye Columbias are uniformly well-pressed, with high quality control, on top notch vinyl. I reflects across the genres, not just jazz, but classical as well. If I see a clean Columbia Masterworks stereo six-eye classical album, I buy it, because I know it'll be a delight to listen to. So, yes, it's not just the 'collector' instinct, but it also plays part, of course. I like the sturdy covers, well-printed artwork that was designed by talented professionals. So yeah, much like the Blue Notes, its; the whole package.