i have recently done some testing on this with DACs rather than full CD players but when you upgrade, a big part of the upgrade should be a better DA Converter and analog output stage.
My experience is there is way more difference between a $2K DAC and a $10K DAC than between a $2k amp and $10K amp. There is a shocking amount of tradeoff between detail and soundstage and image.
I cannot speak about the exact products you are discussing as I have not heard them. It is worth your time (and possibly your money) to explore it. You might find you get more than you think.
My experience is there is way more difference between a $2K DAC and a $10K DAC than between a $2k amp and $10K amp. There is a shocking amount of tradeoff between detail and soundstage and image.
I cannot speak about the exact products you are discussing as I have not heard them. It is worth your time (and possibly your money) to explore it. You might find you get more than you think.