I can't comment on the comparison between these two but, based on owning a lot of high end digital, I can strongly recommend the Opus 21 with the GNSC mod (or without...just that the mod takes the player to w whole new level)...this can be done for around $3k with used player and I am not personally aware of any player as accomplished at near this price.
Of course if SACD is important to you then the Cary by default has this benefit.
Of course if SACD is important to you then the Cary by default has this benefit.