Question: what is the difference between all the keurig coffee makers?
Answer: It compares most closely to the Keurig K50, so let's point out some differences between those two models: K-Select has a 52 oz water reservoir vs 48 oz in K50. K-Select features Strength Control feature for stronger brews. K-Select features a 12 oz brew setting whereas K50 maxes at 10 oz.