If you have coax wired through the house, I strongly recommend MoCa instead of powerline Ethernet. It works very well and doesn’t turn your house into a shortwave radio noise generator.

If it's any help, I used to use Devolo EoP devices, but I'm stopping. My 1930s house has crummy wiring and I was frequently having to power cycle them to get anything to work.

I've switched to using a TP-Link Deco M5 wi-fi mesh (and I've disabled the wi-fi on the router my internet provider supplied).

So far, no problems at all. They're much cheaper also.

> PoE

Do you mean powerline? PoE is power provided over Ethernet... Typically for ip cameras.