Rusted Old Melting Pot
You have only two choices.
The LEE group has 2 pots I woould consider. One is a 10 pounder and the other is a 20 pound pot.
Both LYMAN and RCBS have basicly the same pot. I think they could both be made by the same manufacturer. Both pots require you to run the heat wide open.
You have a choice of "Aluminum" or Heavy that wastes energy.