So far, so bad. Impossible to control temperature for smoking with or without BBQ Guru. 5.5-hour smoke today: aside from the spike to 280 degrees, time mostly spent trying to keep the temperature above 215. I've never had to attend a smoker more times. I've tried all kinds of adjustments and it's just not responsive. I did one test smoke and two for real. One more time, then I'm selling it.