Budget is $800 or so. I can go a bit higher but want to stay out of trouble with wife.

Just got a new LG, 77" C3 OLED and want to upgrade receiver. It's an old Harmon Kardon that does not have any HDMI outputs. Speakers I have are 20 year old Infiniti's but they still sound really good in my hard wired 5.1 setup. Old Blu-Ray player and discs also look really good on new TV.

Most bang for my buck up right now would seem to be a decent quality receiver. My intent is to run Blu-Ray through it to the TV on the rare occasion we watch a disc.  

Usually, we watch streaming service directly to TV via a hard wired Ethernet connection.  Prime, Hulu, Max, etc .

Any receiver recommendations?  7.1 and Dolby Atmos would be good in case I ever want to replace speakers.  I figured I'd replace center one first followed by fronts that also have up-firing ones.

Find one on sale and buy it.

no optical?

inputs devices > hdmi > tv

tv > optical > receiver

newer receivers are pretty crappy and dont have the power or quality sound unless you buy higher end

I have been happy with denon.

I like Yamaha.

Yamaha Aventage (yes, that's the spelling) series.

There are other decent manufacturers in your price range. Go check the forums and reviews on audioholics.com.