There has not been a tonne of innovation from Keurig in the Office Coffee space for many years. The staple has been the B3000 which has been, and continues to be, a great workhorse around the office. While the K4000 is larger and relatively new, Keurig has upped the game by adding in Milk Hoppers to create Cafe Style beverages from the many varieties on the market. See our thoughts on this brewer and the pros and cons in our extensive review.