I have installed several dozen devices of this type over the past several years. It is extraordinary. First they came up with a well made adjustable hole saw. This type of light requires a round hole and I've spent a lot of money on hole saws. This will do all these sizes and it works fine. Next is the control box. It opens without tools, which many don't. It comes with breakaway inserts to protect the wires, which is a first in my experience. The connectors for the cables are already installed and make connection easier. They are way better than the twist-on type. Finally, the light itself is very subtle. It won't stick out past 1/2" thick drywall. They're bright too. Overall, these are the best lights of this type I've used.
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review
Smart bulb Yandex with Alice, base E27, 8 W, RGB color
76 Review
Lamp LED Xiaomi Mi Smart LED Bulb Essential (MJDPL01YL), E27, 9 W, 6500 K
113 Review
Lamp LED Yeelight Smart LED Bulb W3 (YLDP005), E27, A60, 8 W, 6500 K
47 Review