Obviously, the more expensive the appliance, the more features it comes with.
Some dishwashers a range of other cycles, including single rack, pot scrubber, soak/scrub, steam clean, china/crystal, and sanitizing.
The three basic cycles should be enough for most chores, even for baked-on food...Some models designate a certain part of the dishwasher for heavily soiled items that need extra attention.
As they explain, adding an extra rack also means less space for taller items on the bottom rack.
This is more of a preference, I suppose, but it s a tradeoff to consider.
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