I have two coffee makers. One is a Gevalia 12 cup makes great coffee and handles all 12 cups nicely. Don't use it that much, mostly on her days off when she is around to have more than one mug, and when I do I usually don't make more than 8 cups at a time. Each of our mugs holds 2 cups so that give each of us two mugs worth, usually more than enough.
On days where the wife works, she won't be back for a second mug, so we have another Gevalia coffee maker. This one you place a mug on each side of it, put ground coffee and a filter over each mug, and pour the water in the middle. It can be set to brew into both mugs or just one mug. Most of the time it is set for just one mug and brews just in time for her to put her half n half and sugar in it and head out the door. Then when I get up I swap the two trays and brew my mug up.
We also have a French press around here that does one cup at a time, and that makes real good coffee as well.