We drink a pot of coffee a day.
I use to buy Bunn coffee makers, had about three, I loved I could make a full pot in 45 seconds. I hated to clean it, after the vinegar went through. Had to rinse with 10 pots of water to make sure the reserve tank was rinsed out too. After the last developed a hole in the reserve tank.
I went and bought a plain jane Mr Coffee. When I run the vinegar through I run 2 pots of water to rinse it and I'm done for a month. Much cheaper than Bunn and a lot less work.