I had one for 5 months and gave it away to a friend. It's a nice looking unit. The Bluetooth works pretty well.
The main issue I had was not nearly enough smoke. I watched all of the videos, etc. They all put wood chunks in with the charcoal to produce different flavored smoke, other than charcoal. Every time I did this, even with dry, wet, 1-2 small chunks, etc. It would always flame up and give an error code on the screen. I would have to pull out the Charcoal tray and carefully remove the wood chunks and restart with only charcoal. I researchd the small amount of info available and there was no solution. So I gave up and gifted to a close friend. He's using it as a small stick burner not ever plugged into the electricity or using any features, etc. LOL. The design idea is good, but not if you want wood smoke flavor. I ended up getting a Chargriller Grill with an add on side smoker box for offset smoking for short cooks. I use my MES 40 Gen 1 for most and all long cooks. Hope this helps, sorry for being so wordy.