We got started with the T84 for clipping holsteins. Our kids do both dairy and beef and the T84 is excellent for leaving a smooth cut. For dairy we use it on the entire body, for beef it is awesome around the head. Finally, it works great for people with little experience at clipping. If your hand is not steady with more agressive blades, you can easily take off too much. The T84 is a much less aggressive blade and nervous hands or nervous calves won't clip off as much hair.