Actually, I have been looking at some of the others ones that Thermoworks sell. I have been using Thermopens for a few years, but one problem you have is that when the meat is in the smoker, it is hard to read the unit sometimes, especially if it is in the back. Some of their other units have the temp probe on a cord, where the actual unit stays outside the smoker when you are getting the read. And they have just as fast of a reponse time.
Hopefully I will get one soon and report back.
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Klose Mobile Smoker
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2 Charbroil CB940's