Old guy needs recommendation request for old CD players / DAC

An old CD player has a $50 dac built into it with old technology.  So long as they have a digital out to sent to a new DAC, they will work ok for a transport.

the jvc is a great unit with a very tubelike sound--i'm kicking myself for selling mine. i'd surmise the mydac will be much more resolving and detailed; whether it sounds "better" is of course purely subjective.

I do not recommend old CD players. Lasers have a limited life and the loading mechanisms can be failure prone with no replacements available. Buy a modern new player, there are good ones in every price range. 

I tend to agree with @russ69 , but if you do go for one you listed, the JVC is a better bet, at least JVC is still in business. And yes, as @carlsbad says, make sure you can use your outboard DAC in any case. 

Some of the older CD players sounded great.  I’ve not heard this JVC model but I did have a 16 bit Rotel RCD855 and it was very warm and nice sounding.  Believe it or not, I liked the 855 better than a Cambridge Audio Azur 840C.  The Azur was too analytical (in non balanced mode - didn’t have the option to hear it with XLRs).  I also had the Oppo DV970 for many years as well.  I think you have 2 very decent players here, don’t be surprised if the older technology is to your liking….