What are the differences in brewing results between using a pressurized and non-pressurized basket when making espresso?

The main difference between using a pressurized and non-pressurized basket when making espresso is the level of control over the brewing process. A pressurized basket helps to create a more consistent extraction by regulating the pressure, resulting in a smoother and more forgiving espresso. On the other hand, a non-pressurized basket requires more skill and precision to achieve the desired flavor profile, but can produce a more nuanced and flavorful espresso with the right technique.