The last of the Keurig models on our list and the one with which we are going to end our search for the best Keurig coffee maker is the K150P model. This product comes preassembled for direct water line plumbing, meaning you don’t have to bother with reservoir refills. This state-of-the-art brewing machine brews sizes from 4 to 12 oz and features an interactive touch screen with all the necessary settings to fully control the brewing process. The machine can also accommodate travel mugs of up to 7.5 inches tall.