For WiFi5, I use a Ubiquiti AP-AC-PRO. QCA988X based, AC Wave 1. Be advised that it is only powered by 48V PoE (passive or 802.3af/at). I run one here with firmware built off master, replacing the CT driver with the QCA driver.
Weekdays there are usually 12 active clients connected at all times. On the weekends there can be 20+ clients connected across both radios and it runs flawlessly. The 5GHz radio is set to use WPA3 only, while the 2.4GHz radio does WPA2 for older devices that don't support WPA3.
I also have a Ubiquiti nanoHD (802.11ac Wave 2) that I bought to eventually the AP-AC-PRO. The Mediatek wireless driver still needs more work, but @nbd has been making constant progress on it.