Entry-level machines may have an outdated front panel, may run loudly which could compete with the noise level of your conversations, have a limited number of tines to hold dishes in place, and a plastic tub which can rust more easily and radiate the noise from the sprayers. The higher-end dishwashers may offer interior lighting to see way back in the machine so you don't miss unloading any dishes, a smart feature so you can monitor and control the appliance from a distance or order detergent on a regular basis. They can feature more than 100 spray jets, jets that focus on specific glassware or specific pots and pans for a super clean load. They can feature grinding of leftover food so as not to clog your drain, soft water for a spotless finish even on plastic containers, and sprayers that change direction to get to every nook and cranny. These models may cost more, but the options may seem endless, and can have quite good user reviews.