I am looking for a replacement AV Receiver for my Onkyo TX-SR806 which is in an open living room in my townhouse. The entire setup occupies a 9-foot wide by 12-foot deep area. See the rest of my set up below. I am currently running a 5.1 set up, with the way my ceiling is constructed, and the room is laid out, I don't know that I could pull off the ceiling speakers for 5.1.2.







I really like the looks of the Anthem MRX 540 receiver and I hear amazing things about their room calibration. I have always sworn by the Audyessy Room Calibration. Other receivers I am considering are the Denon & Denon AVR-X3700H Marantz SR6015. Any input would be appreciated.

LG 55-Inch 4K OLED TV - OLED55C7P
OPPO UDP-203 Ultra HD Blu-ray Disc Player
Onkyo TX-SR806
3x Ascend Acoustics CBM-170 SE
2x Ascend Acoustics HTM-200 SE
SVS PB-1000 Subwoofer