I was pleasantly surprised when I opened my Keurig box and noticed this was a K-Express  with a long water reservoir and not the Mini where you have to fill it with water for each cup you make. I love my K-Express coffee maker. I can fill the water reservoir to the max and have water ready for the next cup of coffee without worrying about having to fill it. It's the 
perfect size and doesn't take up too much space on the kitchen counter. Love it!!