Gerber’s new WaterSense-approved 1.28-gallon Ultra Flush toilet pressurizes the air in the tank as it fills, then uses the compressed air to force the tank water into the bowl. A MaP score of 1,000 grams puts it at the top of the high-efficiency category. Round and elongated bowls are available with 10-, 12-, and 14-inch rough-ins. List price: $407 with a 12-inch rough-in. Gerber, 866.538.5536,