You should research the
Thermoworks Smoke, Tappecue, and FireBoard. Compare features, price, and read at least 10 reviews from owners each. You should then have sufficient input to make a decision based on your needs and budget. All three are quality and have great customer service. I have experience with two of the three. Search for Special sales on #1 & 2.
An afterthought, your choice may depend on how many probes you desire and need.
hope this helps