Thank you for this really important question. American plastic surgery was forced to use saline breast implants for approximately 15 years while the FDA was evaluating silicone implants. Therefore, we have had a huge experience with saline implants. My personal survey indicates almost all Board Certified plastic surgeons prefer silicone to saline. Saline implants ripple because of the flow pattern of salt water vs. silicone. In an attempt to get rid of this rippling, many plastic surgeons overfilled saline implants which led to a very hard and unattractive looking breast. Saline implants are filled at the time of surgery, therefore there is a valve, and over time, all valves leak due to scar tissue growing down the self-sealing valve and opening it up. Silicone implants used today are infinitely better than the ones used prior to 1991. Rippling is rare, although any implant can ripple, but the thicker the shell, the less rippling that occurs. As for leakage or rupture, a plastic surgeon in Newport Beach, California, has a YouTube video showing a BMW sedan rolling over a silicone breast implant, and it did not break. Interestingly enough, the saline implant that the same BMW rolled over did rupture. Therefore, unless there are FDA regulations prohibiting, I always recommend silicone over saline.