I am glad to see someone else looks at using a stove to simmer and not just boil water fast.
I also have the Camp Chef Everest, I find it MUCH better than the Coleman I gave away.
I like it because it is the best camp stove I have found to use at low heat.
I wonder if the difference in experience with it is do to me at lower elevation.
I looked at the Camp Chef Website and they have an Everest 2X now that has an "upgraded" regulator.
The Everest 2X has 2 20kbtu burners, the Teton 2X has 2 10kbtu burners, it may be a better choice.
I also use mine with an adapter hose and one of my camper bottles, Maybe that is the difference in control compared to using a 1lb bottle.
One thing i learned the hard way, when i installed a propane cooktop in my kitchen there is a small regulator on the cooktop.
I learned you also need a regulator at the tank, the cooktop regulator needed to be supplied with a very low pressure to work correctly.
Dave