I directly compared both players in my system three years ago. My experience matches up quite well with Chuck's - compared to the TriVista, the SCD-1 was somewhat clinical. I also noted a slight touch of steeliness on strings with the SCD-1 compared to the TriVista (which would not have been noticeable without a back-to-back comparison), and a bit more sibilance in vocals with the SCD-1.
