It's easy to keep a counter tidy. Just sweep crumbs and spills into an undermount sink, rather than worry about gunk collecting around a drop-in's lip. Some of the most durable undermounts are made from stainless steel and copper. For steel, the lower its gauge, the thicker the basin's walls. So pick 20-gauge or lower to ensure that it won't dent. For copper, hand-hammering is a telltale sign of top quality.
This stainless sink's removable drying shelf frees up counter space that would otherwise be occupied by a dish rack. About $825, Elkay