I have one and LOVE it!
Hubby and I have found out that we are actually saving money by using it. We would make a big pot in the coffeemaker, only to have to toss out the unused coffee to make a new pot. The pot would shut off after 2 hours and we don't like microwaved/warmed coffee. We also found that we don't drink as much coffee as we used to, which is MUCH better for us.
Plus, those that come to visit don't have to drink the coffee we are drinking, they can have thier choice. I usually have different flavors/kinds along with hot chocolate and tea.