I've used Maverick wireless thermometers, Weber's iGrill setups, and many generics. I'll say that the biggest competition for this is the generics (sometimes price does win out). If you're not going for the cheapest solution, get this.
This setup just works. It works every time. It works without any hassles. It doesn't require pairing, Bluetooth, or apps. This won't become defunct when that app becomes unsupported or ask for all sorts of permissions to your data. It's just a thermometer, a display, and a wireless display.
The thermometer probes yield consistent results (between each other and my previous ThermoPro probes. This is unlike my iGrill where half my probes vary by 8-10 degrees F. The range is superb (I never got anywhere near the range limit, but I did throw several walls in between with no issues.
Compared the other units (including cheaper generics), I think the reliable temperatures, easy to use controls, and availability of ThermoPro replacement bits makes this a winner. As an added bonus, I like the fact that the probes can be used for whatever. I have twice as many Web iGrill probes as I need due to the separate pit and food probes. None of that nonsense here.