Maybe this will help answer your question. Something's different on the MFSL than my previous version -- I have the Columbia 90's & recent the 2 disc Deluxe edition. I noticed it immediately upon playing the MFSL... I heard horn parts loud and clear, that were buried and unintelligible in the discs I've been familiar with. Miles' horn front and center in one -- not the other. This has to be a different mix. In all... the MFSL has blown me away. The mix (or whatever is going on) is so much better than what I've been used to. So much more in focus with great warmth and very realistic ... I felt like I could reach out and touch the music. As far as I'm concerned, any fan of Sketches will fall in love with the MFSL.