Center speaker recommendation needed

[2000cs]

We moved into a house with ceiling speakers recently. There are three in the front of the room and two in the back, driven by a Marantz AV receiver (SR5010). There is also a subwoofer on the floor. Ceiling height is 12 feet. Room is 20ft long and about as wide.

I don’t like having the center speaker above the TV pointing straight down, so I want to replace it with a speaker to be placed below the tv. I have a couple of sound bars but they can’t be driven by the Marantz since they want optical in and the Marantz won’t output optical.

I don’t want the center speaker to visually dominate the room, but I do want decent sound. Prices seem to be all over the board, starting around $50, with a lot between $100-200, and of course some much more expensive.

Any thoughts on best bang for the buck, given the other considerations mentioned?

Also lots of ambient noise (busy road and ocean waves), and I should wear hearing aids when watching, so going for ultra-hi quality sound will be wasted on me.

Thanks!