Looks like you've already gotten plenty of good advice, but I'll chip my 2¢ in nonetheless. I've had both brands albeit in two different systems. I had an Arcam SA20 integrated amp driving a pair of Vandersteen 1Ci speakers. I bought the SA20 because it has the G class amp, which is reputed for being nice and warm sounding. That is not what I heard at home at all. Quite the opposite, in fact. The upper midrange was very edgy and shouty; i.e., super fatiguing. So I sold it. Obviously, this is anectodal, so take it with plenty of salt. For the record, I didn't replace it with anything. Instead I re-did that whole system altogether. In my main system, I was using a Marantz AV7705. I liked it just fine, but upgraditis is a real disease. I upgraded to an Anthem AVM70. I like it a lot for surround. ARC is the real deal. I was never really impressed with Atmos until I swapped the Marantz for the Anthem. However, I agree with the other comment elsewhere in this thread saying that the person's Marantz is more musical than the Anthem. Couldn't agree more. It comes down to personal taste, but the Anthem sounds quite a bit more analytical than the Marantz in my system. I liked how warm and forgiving the Marantz was. But this is really a non-issue when using either processor's EQ. My only complaint with the Anthem is with CEC control via HDMI. I don't experience any handshake issues or switching issues. It's just that none of my HDMI devices can cycle the Anthem's power on and off or vice versa. Small niggle - I just have to sort through the stack of remotes next to me when powering up and powering down. Best of luck to you and happy listening!