Thank you for your question.
Both Saline and silicone breast implants are safe. Each has pro's and con's (see link below). To reduce rippling, most would recommend silicone gel breast implants.
In your best interest to visit with well experienced plastic surgeons who can show you examples and go over the pro's and con's with you.
Saline and silicone implants are both safe and excellent implants with differing benefits. Silicone implants generally are a superior choice when rippling is a concern, and feel more natural. Saline implants are less expensive, overall rate of capsular contracure is less, and the scar is less. Consult 3 - 4 experienced and expert board certified plastic surgeons to review your options.