This my first pellet smoker. It was easy to assemble and feels well built. The ergonomics are good. The controller is straightforward and simple to use. The smoker temp and prob Temps are easy to see from a distance.
My smoker holds within 10 degrees at higher heats, but in the 180 to 225 range it fluctuates +/- 10 degrees. It did not cause any issues with the brisket that I smoked other than extending the length of the smoke. 
My issue with the smoker is the Nexgrill app. It is junk. It constantly crashes, even after reinstalling it a few times. It also won't recognize and connect to my smoker even though my phone detects it in the available Bluetooth devices. Not being able to use the app defeats one of the selling points - being able to watch the temp of the smoker and meat probe remotely. And being able to adjust the temp remotely. Hopefully they fix the app sometime soon. If it had cost as much as a Traeger I would have returned it for the app issues.