What’s the speed? Do you have a shitty 10mbps connection like my parents? Then WiFi, because you’re easily saturating that line either way.
Do you have gigabit? Then Ethernet, but then again getting like 600mbps wirelessly is good enough.
Biggest thing is having GOOD coverage. My house has multiple access points so that my connection is great everywhere. People with a shitty ISP router shoved in the cupboard in their basement make no sense lol.