As of February 2015, the Keurig Elite K40 single-serve coffeemaker brewing system and the Bosch Tassimo T20 beverage system and coffee brewer are the best single-cup coffeemakers at Walmart. Both coffeemakers have thousands of positive customer reviews on the Walmart website.
With over 1,500 reviews averaging a 4.5 out of 5 star rating, the Keurig Elite K40 brewer makes a cup of coffee in under a minute without the hassle of selecting and measuring out ground coffee by using a consumable K-Cup.
Similar to the Keurig, the Bosch Tassimo brews coffee from T-Disc pods with the precise instructions for temperature, water and time duration from the bar code on the pod. These two coffeemakers can make teas as well with the right cups or pods.