Follow the directions the coffee and coffee maker comes with.
People compliment me even on old Folgers coffee I've made, and I explain I just followed the directions.
Second, if you can, filter your water. Here in the Hill Country, we get a lot of limestone in our water. It'll actually cake in your maker if you're not careful. Nothing like chewing coffee along with yoru Corn Flakes...
I didn't mean to sound arrogant about my coffee. My intention was to state that following the directions of the coffee makers and the directions that the coffee pot came with tends towards greater quality results.
Coffee is coffee - my staff know to have the pot going by the time I reach my office, and I'll down a few big mugs during the day. No one messes with my Sportsman's Warehouse mug, and I never complain about the quality of the java, even when it's a new staff member who hasn't figured out how to make coffee, yet.