I use an old Svea 123.The only time I use an insulator underneath is when I'm in the snow.You need it to keep the fuel warm.

My "kitchen" includes a Svea 123(heavy but NEVER fails,EVER, and burns anything you put in it),1 pot,fork, and a sierra cup(stainless cup with wire handle that run around the lip to keep from burning the cr*p out of your lips.).

So I actually have a 1 1/2 qt pot and 2-8oz cups(the sierra cup and the top of the stove is a cup.