Numi is the manufacturer’s most decadent toilet with features that are too numerous to mention. The WaterSense-certified toilet offers a built-in bidet, an inter-active LCD touchscreen, a built-in deodorizer, a built-in music system, an automatic open and close lid, and a heated seat and foot warmer. To top things off, the water-saving unit flushes with just .6 or 1.28 gallons. Cost: $6,400. Kohler. 800-456-4537.