If my current Denon would pass the video stream, unmolested, I would not swap it out. It may seem trivial, but I like to see the menu screen of the audio processor on my display.
Which Anthem AVR would you suggest? I have no experience with Anthem.
FWIW, The AV sales rep I am working with suggested the Denon X4500.
I'm currently running a Denon 4500H, if you have any questions. I opted for a 'poor man's separates' setup, with an ADA1000-3 driving LCR, and the Denon handling amplification for the other 8 channels.
Any regrets not going with the 6500?
Nope. Pretty sure a 4500+ADA-1000 is cheaper, and destroys a 6500.