The meater works great for internal temps. The ambient temp sensor isn't always accurate but internal is. With the meater+ you need a device like an iPad to bridge to your WiFi network. Not having any wires is great. I use the meater during the cook and when meat is resting in a cooler. No wires are convenient there.
My go to is my FireBoard thermometer. I use it to control my egg temp and it has 6 probe ports.