The 840C is a very good unit, and I hope you will enjoy.
I have very much enjoyed having the "Digital In" function as I can stream audio to the player's DAC. This is, imho, what will save cdp's from the scrap heap - at least for the next few years. Eventually, my guess is that any player which does not have that feature will find little accommodation among the audiophile community. I'm seeing more players with that function, so that's a good sign. I use Sonos currently and I find the sound to be very respectable when fed into the Digital Input of a cdp's DAC.
I have Sonos and the 840C set up both at the office and the listening room (to be clear, the 840C is not the primary/reference cdp in the listening room; it is my "budget reference" player), and I have an Azur 840C both for Redbook playback and Sonos signal treatment at the office. It's a very enjoyable arrangement.