A Chin Augmentation would GREATLY improve your appearance. The chin can be augmented with man made synthetic implants or by advancing your own jaw forward (Sliding genioplasty).
As regards chin implants - as you pointed out they are made by different manufacturers but can be divided into 3 groups : Silicone elastomers, PTFE (formerly Goretex) and POREX implants.
Of these the cheapest and easiest to put in are the silicone implants. They are also the most apt to rotate and when surrounded by scar capsule to lose their shape. They can be placed either through the mouth or the outer chin.
The PTFE implants are softer and less apt to move, but need to be stitched in place. Like silicone implants, they are not incorporated by the body.
Porex implants are porous and harder to put in and need to be place through an under the chin incision (cleaner and better visibility). They allow in growth of scar and blood vessels but are best stabilized with a single screw (which you will NOT feel).
In a Sliding Genioplasty, a cut is made through the lower jaw. The cut can be horizontal or oriented at an angle to allow a greater jaw height as the segment is pulled forward. It is then fixed in the new location with a plate and screws (which you will not feel).
Which one? depends on your like and dislike as well as your surgeon's preferences.