I have a UniFi EdgeRouter-X and two UniFi APs. I'm happy with the APs satisfied with the ER-X. Once nice feature on the ER-X is their Smart QoS; you specify your broadband UL/DL rate and the router does a good job of preventing single devices from monopolizing your pipe.
I've been looking into replacing my router with something that can host a VPN that I can connect to on the go. I don't think the ER-X can fully utilize my broadband with L2TP/IPsec or OpenVPN so I'm looking for something that can run Wireguard.
Right now I'm eyeing a PC Engine APU2 [0] running OpenWRT. I think it's powerful enough to meet my needs and would also function as a pi-hole. This setup will require more setup than the ER-X but it also is more customizable.
My UniFi APs are upstairs and downstairs. Since my place isn't wired I am using some MoCA devices [1] over coax to get everything connected.