I have used DrayTek 286* series router/firewalls for years for our home network, relying on their integrated modem.
The 2865ax is significantly faster than the earlier models. It is compatible with earlier models so that, if you are careful, a saved configuration from an earlier model can be loaded into the 2865ax, saving the need to laboriously re-create all the proven network settings. I have installed the latest firmware from DrayTek (4.4.5.8_BT), which is an easy operation. Doing all this to switch over to the 2865ax took me about 5 minutes. The 2865ax is proving reliable in operation (been running for a month now with no glitches).
The 2865ax's central management system is useful. It allows you to manage DrayTek kit such as AP900 access points and P1092 switches without having to address them individually. I use AP900s with Ethernet cabling from the 2865ax to provide cover throughout our long thin house having several thick internal walls. Perhaps not surprisingly, the 2865ax does not support PoE but it does support mesh networks with compatible DrayTek kit: I haven't needed to try that yet and my AP900s don't support mesh.