The highest-rated K-cup brewer on Keurig’s website is the Keurig K45 Elite brewing system, as of 2015. It is ranked with 3.75 stars out of five, based on 1,421 reviews.
The Keurig K45 has its own water reservoir that eliminates the need to refill the chamber with each use. It works with all K-cup prepackaged products, including coffee, tea, iced beverages and cocoa. It allows for the use of three different cup sizes, including travel mugs, with tall mugs accommodated by removing the brewer's drip tray. The brewer is priced at about $120 and comes in blue, white, rhubarb and black.