Re: Cerapic vs metal bowl
Metals like steel and copper (mentioned above) are good heat conductors and will therefore transmit the heat from inside to bowl to the outside air more readily, thereby lowering the internal temperature of the bowl somewhat. Ceramic is a heat insulator so it will maintain more heat inside of the bowl perimeter with less heat loss over the course of a smoke. Smoke happy.
Al Fakher Large Solid and a bowl of DM . . . life is good!