For everyone that is complaining about the water level in the toilet bowls and having to clean the toilets more frequently this is because of Al Gore and the environmental controls that were placed on toilets. I wish I had kept my old toilets because they filled the bowl sufficiently and you could flush once and it would be clean so now you may have to flush twice just to rinse the bowl so and LOGIC. And as the one person mentioned, yes you have to do alot of research because there are so many requirements in ref. to buying a toilet. I did alot of research and searched hi and low to find an old fashion toilet because I knew the new toilets conserved water, there are none to be found. The trap on the toilet limits the water as well so are they really energy efficient no way.About 4 years ago, I first bought a Toto Aquia for our powder room when we lived in Canada. We did not like it because we needed to clean it after each use! I even had the Toto sales representative come by our house to measure the level of water. I could not believe that it was correct. He joked and told me Toto also invented the toilet brush and they are making money on that too. So for an upstairs bathroom, we bought a Neptune Parma FB1625. As chic as the Toto, it's design is beautiful. But even if it was a dual flush toilet, the shape of the bowl kept the water where needed and kept it clean like a regular toilet. I highly recommend it. We , since then, heve moved to LA and I am in the process of changing my toilets for dual flush. I will do anything to find here the Parma from Neptune.