I actually have quite a bit of respect for Marantz processors. They are the only "consumer level" processors that have a discrete analog output stage. Excellent power supplies. It provides a very refined and full sound with lots of impact. That being said, the Marantz is voiced slightly warm and will have soft rolled of highs, but only in comparison to another processor.
So, if you want something with better high frequency response, the Anthem is the way to go if you want 4K and all the bells and whistles. A step above this would be the Krell Foundation 4K, but we are getting expensive now.
I would agree on avoiding Emotiva/Onkyo/etc.
I don't have direct experience with Roku so I couldn't comment on Erik's experience, but my general assumption is "HDMI - audio return channel" is a decent feature but not necessarily as good quality as a with a direct source.
So, if you want something with better high frequency response, the Anthem is the way to go if you want 4K and all the bells and whistles. A step above this would be the Krell Foundation 4K, but we are getting expensive now.
I would agree on avoiding Emotiva/Onkyo/etc.
I don't have direct experience with Roku so I couldn't comment on Erik's experience, but my general assumption is "HDMI - audio return channel" is a decent feature but not necessarily as good quality as a with a direct source.