My wife and I have tried MANY different wireless thermo's. They work for the first one or two times then never work again regardless of what you do. The Weber iGrill is the best, most accurate, most trusted that we have used. We have grilled steaks for entertaining and people always compliment on how well they turn out. The iGrill takes the guess work out of grilling meat. The only challenge I find is the rubber colored pad. The heat really takes a toll on them. I never use them to hold the probe by because of the heat over the grill surface and the probe itself. They do serve an important purpose though in identifying which probe is associated with which steak in the app. 

You won't be sorry with the iGrill unit, we haven't!