Also my favourite. I have one with a few sensors attached that has been running for months. It runs Tasmota and feeds the data into Home Assistant via MQTT.

Have you tried esphome? I never really got into tasmota because esphome was closely integrated with home assistant. Now it is part of the same project and integration is even tighter.

Not yet. But I really like Tasmota. The documentation is also good, the ESP32 port has an embedded language on it that one can use to extend its functionality.

Isn’t that ESP8266, not ESP32?

Yes. But let's be honest, there aren't actually many use cases where you need the extra computation or ram of the esp32

Biggest issue I can think of is trying to do PWM _and_ WiFi work simultaneously on an esp8266. If you have, say, an esp8266 serving up a small webpage for control and don't want to add an external PWM board then you might notice intermittent issues. This is more obvious if you're controlling something like a lighting ballast that's PWM controlled.

Of course now that I'm looking around I see https://github.com/khoih-prog/ESP8266_PWM which seems promising (subdivides the second of two available hardware timers to allow PWM that isn't sensitive to other running code). So there's multiple workarounds (libraries, breakout boards) besides upgrading to an esp32.

Depends on what you do. Few years ago I played around with micropython on a ESP8266. There a bit of extra RAM would have been helpful. As said years ago, can very well be that micropython is better optimized nowadays and it's less of an issue.

That YOU have found. I use both and for sure the ESP32 is now much more favoured in my setups than the ESP8266 (as much as I love that chip).

I’ve wanted to try out the ESP32 for a while but I haven’t yet found a project that the ESP8266 couldn’t handle. Love that chip.