Recently I was in HD for some parts. While I was talking to the head of the department, a lady came up obviously needing to speak to him, so I told him to take care of the problem. It seems she had recently purchased 2 Glacier Bay toilets, models not known, and they both were leaking. The department head referred her to the store manager. These toilets are commonly called "builder or contractor toilets" because they are so cheap. Contractors buy them to install in spec houses not caring that the homeowner will almost certainly have to replace them within a year or two. In my opinion, if you have a good quality and good performing toilet, dual flush is really not needed. My Toto Dartmouth after almost 2 years service has never needed to be flushed twice, and has not need the extra boost available by holding the handle up to drain the tank of the extra water. There has never been a clog. The Dartmouth is quite similar to the Drake.