bought the Kohler Cimmaron Comfort Height round bowl toilet after much deliberation over the matter to replace a first generation 1.6 gallon water saver. I have to say that the unit functions as it says, very effieciently that is, however, we rplaced an inefficient toilet that did not leak, with one that does leak (between the tank and the base) how frustrating is that!! They sent another gasket, it still leaks, and now they are sending a voucher for a new toilet! That may sound good to anyone else, however it is a 3 hour round trip to get the thing, and I won't even mention the time that it will take to remove and replace the thing, and all the grumbling in between!! Am not very happy, has shaken my confidence in choosing any of the pending renovation items.