Performing lateral raises with a cable pulley is always the smart choice as you can maintain continuous tension over the muscle both in the eccentric and concentric phase.

Cable lateral raises are a great exercise to give a balanced shape to your shoulders and make them look broader. ... Stand next to the pulley machine with your feet shoulder-width apart.

The researchers found that both dumbbell and cable lateral raises produced small to medium increases in lateral deltoid muscle thickness. Percentage changes ranged from 3.3 per cent to 4.6 per cent.