Anthem vs Arcam

Can I offer some advise.

If you want people to help you and offer actual advice, delete Audio Science Review from your life.

ASR does not actually review audio components. They measure them and base everything on the numbers. Kind of like reviewing a restaurant by counting the calories.

OP, ASR doesn’t like ANY HT receivers using HDMI. In his reviews, he segments them from the rest of the audio component world. He generally will show how a reviewed item stacks up against other of this type.  Since they are, as a class more noisy with higher distortion, he’s pretty hard on them.  (I’ll note that not all that long ago, those SINAD and THD specs looked pretty good.) ASR has a very good post up explaining how HDMI works and why it’s inherently problematic. 
 

FWIW, I use a Marantz AV 7701 purchased used on eBay at an incredible price. Great reviews in its day. Hits all your points, although it does offer balanced input/output. 

I can only add my experience with Anthem, I had a D2v that I sold and bought a Marantz 8805. I am not sure if you are using this for 2 channel or not, but the Marantz is much more musical and warmer in sound than the Anthem. I mainly use my Processor as multichannel but when my 2 channel was in the shop, I tried listening to the Anthem and decided I would do without music till my pre amp came back. I can’t speak to the Arcam, but the dealer told me that the Marantz fit my needs better. Why aren’t you looking at Marantz, you’d have some traction on the GUI already. Just my opinion of course.

@erik_squires 

Arcam has been acquired by Harman so the they have shared research and resources now. The JBL and Arcam flagship processors are very similar.

The Marantz 8805 would be worth a look. Great reviews. Good luck !