I don't know your price point and ultimate goals but if you are looking for something that is going to give you HDMI 2.0 and HDCP 2.2 then I strongly suggest looking at the Krell Foundation processor. It has all of that and has proven to be one of the best-performing pre-pros on the market. I laughed when I read the often acerbic and outspoken Michael Fremmer rave about the Krell Foundation on everything he threw at it including what it did for plain old regular broadcast TV.
Many of the 4K TV sets have very good scaling processors built in. I'm not sure if your comment about the Radiance is based on particular scaling requirements you have or not. The other benefit of the Krell is that is maintains active HDMI switching at all times.
I've been following that unit very closely and it's impressed me.
I think it gets you away from the AVR category and into separates the way you want.
Many of the 4K TV sets have very good scaling processors built in. I'm not sure if your comment about the Radiance is based on particular scaling requirements you have or not. The other benefit of the Krell is that is maintains active HDMI switching at all times.
I've been following that unit very closely and it's impressed me.
I think it gets you away from the AVR category and into separates the way you want.