I own 3 yamaha avr's, 1 onkyo, and 1 marantz. they all still work and they all sound different. I would shop for warranty, features, price. all the brands probably have something useful. maybe get a newer avr with class d amps as they run cooler. its usually the display on an avr that creates a lot of heat. I like the marantz because can close the display during a movie...not big on bunch of fancy lights distracting me from tv or movies.
Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300 LG oled c9 77
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5, Magnepan LRS, Audioengine A2+
Subs: Rythmik FV25HP, Rythmik FV15HP, Velodyne HGS 12, Velodyne VA1512