I received this question earlier in the week and thought that it would be best to address it in case others pondered the same question. The question was, "What is/are the dfferences in the KBT-741 and the CDT?" I can honestly say that the major difference between the two units is that the KBT has a square water container and brewing tower and the CDT has a circle water container and brewing tower. The KBT does offer three color options (Silver, Black and Grey), when the CDT only offers the Silver color option. If you ever ponder a question about a unit that you cannot find the answer to, stop your worrying or stressing and email JL Hufford Support at support@jlhufford.com or you can chat with us with the live chat function that you can find to the right of the JL Hufford logo.