Does anyone have experience with either the SMZ5002UC

Anti-Tarnish Silverware Cassette or the SGZ1052UC

Dishwasher Accessory Kit? They both sound potentially very useful, but I welcome words of wisdom from experienced customers. I have not been putting sterling flatware in the 1989 Kitchenaid nor have I tried cleaning tall items like cookie sheets, so both of these would be tempting if they worked as advertised.