If you are thinking about changing things up and going for a buzz ... 4 clipper guard, while the sides and back are shorter, often clipped with a #1 or #2 guard. This gives the hair a more rounded ...

Unless you're going for a baldie or a buzz cut, you'll want to pay attention to the clipper guards being used ... a 2 guard will cut the hair to 2/8" (or 1/4"), and a 3 guard will cut the hair ...