The Hamilton Beach FlexBrew Trio Coffee Maker gives you three different options on making coffee in one machine. I really love this coffee maker, I can set the delayed timer and have a whole pot ready when I get up in the morning. I can use the single serve side to use k cups or there is an insert so that you can use regular coffee in single servings.  There are two separate water reservoirs for each side that are very easy to fill. The single serve side gives you options on the strength of your brew and it also gives the options for what size cup you are using. Very easy to operate and makes great tasting coffee.