Caps, I was comparing the same 2 smoker/grills in late 2021 myself. I had been using a BGE for 20+ years and was very comfortable with it, still use it today. I thought a pellet grill would offer me some variety opportunities. I chose the 590 and it was delivered to me 12/21/2021. I joined this forum in January 2022 and have learned of many headaches. I never used an app, but have no issue with those who depend on them. I had temp swings in February, but learned from posts on the forum that my grillgrates were positioned too close to the temp probe. I moved the grates to the right side of the 590 and have had no problems since. I bought those "3rd party sensors" years ago and use them today. I use the 590 probe inside the grill to monitor/check temps there and found where I could get a probe holder from a poster on this forum. There are great people here on the forum and I won't get in the argument with those who have had less than satisfactory experiences with the company. Use your common sense and I wish you enjoyment with whatever you decide. Semper Fi.