Just got an XL egg a couple of days ago. Been playing with temp control. Tonight I wanted to simulate a smoke temp. Lite fire and 20 minutes later I had lid shut, daisy wheel set, bottom vent set with temp approaching 200. Set everything based upon some other threads and 3 hours later temp is still holding 230--250. To me this is awesome. Done fighting other smokers every 30 minutes trying to get to temp. These eggs are the real deal!