Gerber. The Avalanche 1.28 LS one-piece toilet is WaterSense-certified for 1.28 gpf. Dual siphon-jet technology clears waste quickly, the maker says, and a large water surface helps keep the bowl clean. It features a Leak Sensory Pro fill valve to eliminate toilet run-on, an elongated rim, and a fully glazed trapway. White and bone hues are available. 630.754.0278. www.gerberonline.com.