The two major implant manufacturers in this country are Allergan (previously independent company known as McGhan and the Inamed) and Mentor (now under Johnson and Johnson Co.) and both produce silicone breast implants. My personal experience over 24 years is that Allergan's implants are significantly superior to those produced by Mentor and this includes both silicone and saline. I found the failure rates of both types of implants to be much higher in Mentor's than Allergan's and have discontinued usage of its breast implant products years ago.
Regarding: "What the Top 5 Silicone Brands Used by Surgeons? " I am ASSUMING you are referring to Breast Implants rather than other silicone products. In 2011, the 2 largest breast implant companies in the world are MENTOR and Allergan (whose implants are termed Natrelle). Both have life time warranties on their implants. I would not recommend you use other implants in the US. Dr. Peter Aldea