Buying a sous vide circulator is the first step in the sous vide process. You can use your circulator in any pot, and if you are just getting started it's a great way to go, but for maximum sous vide efficiency you may want to turn to a dedicated sous vide water bath. There are several ones that we recommend, and each one has its own lids, racks, and insulators that can make it even better.
Here are my top three picks for sous vide water bath systems. Two of them are 12 quart systems that work great for small to medium sized families, and one is a 26 Quart system that is best for large families or cooking for parties.