I know often ask me for samples of my latest batch. I've heard that the twist off type will break. I go to a local wine shop where they save one liter yuppy mineral water bottles for me. It is on the East side, just a few miles South of Tittabawassee Road. I like the chocolate.
Some people use just a can brand name extract.
I get dried pellets. Put 2 gallons of water in your pot, crank up the heat to boil it. Fill fermenter about halfway with cold water so when you add the warm mix later on, it'll cool faster. I actually use several trays of ice in my fermenter. Put roasted grain in cloth bag, suspend in water,boil one hour.