@gcluley I went with the Dahua VTO2202F-P recommended by Intermit.Tech's Quindor in his video here:

youtube.com/watch?v=GbkCuT4qHb

Using it with a HACS HomeAssistant integration that works pretty well. I'm also using Dahua's "DMSS" app that lets you monitor and interact with ppl. at the door over local Wifi (you can turn off the cloud integration in its web interface and block it from the internet entirely through your router/fw).