The Kohler K-3609 Cimarron toilet is another very popular model. The toilet features AquaPiston technology, that delivers a powerful flush. AquaPiston canister allows water to flow into the bowl from all sides (360 degrees), increasing the power and effectiveness of the flush. The Kohler K-3609 is very efficient in clearing solid waste. The toilet earns a Maximum Performance (MaP) score of 1000, meaning it removes 1000 grams of solid waste in a single flush. This WaterSense labeled high-efficiency toilet uses just 1.28 gpf, that provides significant water savings without sacrificing performance.