The effect should be the same. However, some people think that it is best not to fry traditional Chinese medicine in a metal pot. I think it is the reason why the earliest Chinese medicine was boiled in a crock.
As for the brand, as long as it is a product with qualified quality and safety marks, it is almost the same. I use the electric medicine pot of Baijianing brand, which is not expensive, but quite convenient, so I don't have to look at the casserole all the time.