Thanks! As far a features, my wife wants WiFi and a system that would support playing tunes off of her iPad and smart TV. She's on Ntflix, etc all the time. My screen is not 4K, a possibility for the future. I occasionally play a 3D CD. I don't know of any upgrade that would help my current sound system. DTX would require more speakers like Atmos. Both receivers look good. Does Denon also make Marantz? I want to stay away from Marantz right now.
Thanks again for the recommendation!