Explaining all the subtleties of saline vs silicone vs gummy bear anatomic implants could turn into a long answer, and that's what an in person consultation is for. I'll do my best to summarize the important differences here. 1. All implants come in a silicone shell, and your body will form a layer of scar tissue called a capsule in response to any implant. If saline implants rupture, the silicone shell stays within the capsule and your body absorbs any leaking fluid. Most companies have a lifetime warranty to replace your implants and help cover some of the replacement surgery cost, but it can take several weeks to process the refund, and your capsule may shrink down during this time, which can make replacement a little more tricky. If silicone implants rupture, most of the time you can't see or feel a difference since the gel stays in the capsule. If the implant is ruptured for several years, the gel can cause inflammation in the capsule, which is one potential cause of capsular contracture. The gel can sometimes also "bleed" out of the capsule into the breast tissue, which in rare cases might become infected or become difficult to completely remove. 2. Saline implants are filled after they are placed under the breast tissue or muscle, and silicone implants come pre filled. In some cases of asymmetry, saline may allow for closer balance of asymmetry, but silicone implants are made with smaller differences between sizes now, so balancing asymmetry is getting easier with silicone. 3. Gummy bear implants are anatomic shaped. It is commonly said that this creates a more natural look, but in a recent journal paper, doctors and patients couldn't tell whether implants were anatomic or round based on after photos. These implants are textured, which means they cling to the tissues a little like Velcro. They have lower rates of "bottoming out" or displacing into the armpit, but they have a small risk of twisting, which could lead to a deformed shape, requiring revision surgery. Also, textured implants are linked to a form of lymphoma that can develop around the implant called ALCL. It's extremely rare, but it does not appear to be linked to smooth implants. 4. Profile refers to how much the implant "sticks out" off the chest in comparison to how wide it is. In general, low profile implants look more like pancakes, and high profile implants look more like torpedos. Although higher profile implants tend to look more rounded and artificial than low profile, the final look also depends on chest and breast shape, the amount of natural breast tissue, and how the implant is placed. 5. Saline implants are the least expensive, followed by silicone. Gummy bear or "form stable" implants are the most expensive. But when you factor in revision surgery, it becomes less clear what the best "investment" is since saline implants have higher rates of rupture and capsular contracture. The bottom line is that there are some definite differences in the implants themselves, and sometimes one particular implant type offers advantages for certain patients based on anatomy or the desired "after" look. But the best choice for any individual often comes down to a matter of personal preference. I encourage you to find a few board certified plastic surgeons who have a lot of experience in breast surgery and who have before and after photos you like.