Probably, the question would get more attention and answer(s), if it was posted on networkengineering or serverfault.
Primary options, I came up with:
MikroTik hAP ac²
pros:
- possibilities of what can be achieved with proper setup are, virtually, limitless (though, there is a downside — see cons)
- 4 ethernet ports (+ 1 "WAN")
cons:
- difficulty of setting up: all the options you would want for a home use (like setting password for the Wi-Fi and setting up guest Wi-Fi network) are not obvious to do and require reading of manuals or MikroTik wiki.
Xiaomi Mi WiFi Router 3G
pros:
- PRICE (you could get it from China for ~35-40$)
- custom firmware (with English interface) is available
cons:
- only 2 ethernet ports (+ 1 "WAN")
- stock firmware is in chinese
- flash of custom firmware is tricky
Other options to consider:
- SNR-CPE-ME1
- ASUS RT-AC68U