I was hoping to upgrade my Marantz CD63 II KI Signature CD player, which after nearly 12 years, is no longer working. Would the Marantz CD6003 be a reasonable replacement and would it compare in terms of performance? The KI, when working, gave me many hours of outstanding sound quality but I was wondering if a similarly priced current model CD player would match the CD63II KI, given advances in technology over the years? I am also using a NADC350 integrated amplifier, still working reasonably well after a decade. My speakers are Bose 301 Sonata (Series III Limited Edition), which after 13 years are showing their age and also due for an upgrade. Any advice would be greatly appreciated Thank you!