A brand-new kitchen sink is an investment that will completely change the look and functionality of your kitchen. there are some factors you should consider before making a purchase.1. The MaterialPorcelain, stainless steel, cast iron, there are many materials to choose from. Thinking about how much use the sink will get and how frequently you plan to clean it. Porcelain sinks are prone to stains and scuff marks, but they do come off easy with baking soda.it might be smart to invest in a stainless steel sink. They look very minimal and modern and will be much easier to keep clean.2. Undermount..