Hi.
I’m in the UK and have both Aqara E1 and Hive UK7004240 TVR’s running in HA. My experience is as follows:
The Aqara E1 works out of the box with Zigbee2mqtt. I use Simple thermostat to set the temperature and Scheduler component to control it - nice and simple.
The Hive UK7004240 TVR’s are basically re-badged Danfoss Ally 014G2461 TVR’s. They work out of the box too with Zigbee2mqtt.
I personally prefer the Hive TVR’s over the the Aqara’s as they run very close to the chosen temperature settings - this is due to the very good integral PID on these devices. The Aqara’s tend to under and over run the set temperature on my heating system - YMMV
The only problem I have had with the Hive TRV’s, is for some reason my Zigbee coordinator and Zigbee2mqtt don’t like connecting directly to three or more devices at the same time - could be a bug. I have no problem connecting three Hive TVR’s via a Tradfri repeater and a Sonoff Smart plug.