You can change up the flavor of this mac and cheese with other types of cheeses. If you're looking for a delicious flavor, start with good quality cheese.
If you typically eat frozen, prepared, Kraft or similar mac and cheese this will not be as salty, add salt according to your taste.
I do like a teaspoon of chicken bouillon added with 1/2 teaspoon dry mustard and 1/4 teaspoon cayenne pepper.