Anthem vs Arcam

ASR reviews garbage. I would not care for anything they say.  I owned an AVM60 for 4 years.  I traded in for Marantz AV7706.  About 2800 from local dealer. Before the price went up I think.  It had a hum in my system where Anthem did not. Went back and paid another 600 and got AVM70. Hum gone. Both sounded about same in my system.  The Marantz gui is faaaaar better than anthem.  I think I prefer arc sound in the end.  Also the cardboard rocket to hold mic for a $3000 processor is ridiculously cheapo move on Marantz. Anthem gives real mic with calibration file and tripod.  Comes with toroidal transformer. Hence no hum.  Go for the 70. Search for a deal and grab it. 
 

I have never heard Arcam but historically very good stuff. 

I have never tried the ARCAM, but I have had 4 different ANTHEMS - Sound MUCH better than Denon (which I had), Marantz (which I have had), Onkyo (which I have had - sounds better than Denon or Marantz in my opinion) BUT:

My 1120 the volume got jumpy - traded for AVM 70 (just a total s**t show), they replaced it with a new one, works except one of the outputs for a subwoofer.  I have a 520, intermittently performs the HDMI handshake with TV - it is 3 years old.  Anthem has good service, and my dealer handles the freight, so I really do not want to try ARCAM because the dealer who sells ARCAM charges to send things in under warranty - I think that is s****y - so check the policy of your dealer.  The bottom line - as compared to Onkyo, Denon, and Marantz - there is just no contest.  The sound is absolutely incredible - they just are not the most durable things on the planet.

You might want to look into getting an Anthem MRX 720, or the MRX 520 A/V receiver, they both come with the ARC room correction and you can hook up anything you need with these, they have pre outs for all the channels and you can even hook up 2 subs.

I’ve had the MRX520 since it came out and I’ve never had any problems, once it was set up I just plug in my components and it works seamlessly with what i plug in. since it is the previous edition you can still find great deals on new old stock if you look.

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.