checking out this video now, just sharing in case anyone else is interested
I love the Aquara sensors - have one on every window. Haven’t had to change a battery yet.
That said, they don’t use a standard zigbee and some devices will throw them off the mesh. I find that the Sonoff and Ikea repeaters work great. I also found that it helps if there is a repeater in close proximity. I will typically ensure that I have either a Sonoff or an Ikea repeater in each room where I have one of those sensors. Even with this, they will occasionally lose connection. Being Zigbee, they are quite easy to re-pair and will be recognized by the hub and start working again immediately upon the completion of their inclusion.
I've not tried the latest generation Aqara stuff, most of my contact sensors are either Aqara or MIJIA though, with a few smartthings sensors in the mix from the v2 kit I bought way back when.
I'm a big fan, they've been very reliable for me (I also use tradfri outlets around the house as repeaters) and the battery life is incredible compared to the smartthings units.
All my contact and motion sensors are Aqara; I bring them into Hubitat as virtual devices by way of zigbee2mqtt, and they have been very stable for me on that platform.