I'd try the Vudu app through the TV first and see if DD+ is able to deliver Atmos to the soundbar that way, if not then buy something extra to plug into the soundbar.I will be receiving my n950 soon, and it will be my first system with Atmos. I have read through a lot of the K950 thread, and there seems to be quite a few options to get Dolby Atmos to this soundbar.
I am mostly interested in streaming content (not physical media, so likely VUDU), and would like to get HDR + Dolby Atmos. My display is a Samsung NU8000.
Is there a preference between Chromecast Ultra, Roku Ultra, NVIDIA Shield, XBOX, streaming through 4k player, etc.? What setup would you prefer if you were starting from scratch?