Silicone implants are a better product. They feel more natural and give the surgeon the opportunity to create a more pleasing breast. They feel more like natural breast tissue than saline. I usually recommend silicone gel Natrelle for our patients. They also are available in different projections which in my opinion give greater flexibility for the surgeon to achieve the patient's best breasts.
Silicone implants feel more like natural breast tissue whereas saline implants tend to have more waviness and bounce more when jumping or running especially in those with small breasts.See a board certified plastic surgeon for best advice.