You mean the round weight on one ? Not the 3 piece one you can get for Presto.... The only round weighted one is Mirro. Don't buy one ! The new ones a junk. They have springs in the handles that keep wearing out. Then, you will be finding a harder time finding parts for any Mirro. I was told that my a gal that runs the canning dept. in a store where I teach. Mirro was bought out by some other company.
What is wrong with the Presto with the 3 piece weight set added on instead of the counterweight that comes with it ? You just buy the weight set extra for about $15. Leave the dial on, but then you rely on the weight instead of watching the dial the whole time.
So easy. It just rocks away the whole time. You can easily get Presto replacement parts so far. That is my favorite way and favorite canners.
The only other brand is All American, and they will be very expensive, and have those big bolts you tighten down. Metal to metal seal. They also have a dial and weights. The weight is round, but I really see no advantage.
You want a 22 or 23 qt size canner to stack that many pints.