Have you heard any CDPs that compare at under $10K or above to your system? Such as the Luxman 03X, Accuphase DP450 (or more expensive DP550), Audio Note 4.1 (expensive too), Ayon CD10 or CD 35 II. Could it be better purchasing an equally good or better sounding CDP for $4K to $15K than adding a $5k transport to my system or are symbiotic matched separates (like yours) better in the same price range?
This is a list of really good contenders. Of your list I’ve only heard the Audio Note and Ayon but under audio show conditions in single brand system format. You could not make a bad choice with any of these. High quality CD player is a fine alternative to separate transport-DAC arrangement. You have very good options with your given budget.
Ayon and Audio Note take decidedly different paths to design and approach. I do not know which philosophical camp you adhere to (oversampling/up sampling vs NOS/No digital filtering), but both succeed in their own ways. I like the flexibility separate transport and DAC allow. In terms of sound quality, I do not believe there is a penalty if one chooses a CD player if it is high quality.
You have a very large CD collection and I’m sure that many of them are cherished. It makes perfect sense to want a top-quality CD playback system to fully appreciate them. So, an upper tier CD player or separates. Either will deliver for you.
Charles