If you want similar levels* of audio performance to your CDX for replay then you will need the Zenith. Novafidelity is also excellent and easier to use as you have 3 way's of controlling it: a remote control, phone/tablet with their app, or the front panel controls using the display. This is very important as nearly all the problems with these types of devices are due to wifi issues, so the front panel controls and separate remote eliminate these issues. I have and use both Innuos and Novafidelity here in our demonstration studio.
* note: no streamer or server will be able to achieve the same level of audio performance as a good CD player or CD transport and DAC.