first thing to do is to choose a great surgeon who is experienced in this particular procedure.
When doing liposuction or liposculpture of the chin, jawline, and neck you want to ensure that you're not being too aggressive with the liposuction component and most surgeons will tend to use a smaller cannula an area of 3 mm or less in order to ensure that they do not create dimpling or uneven contours of the skin. I am a big fan of laser assisted liposuction and use it frequently and my own practice. The reality is that laser assisted liposuction such as SlimLipo allows you to more evenly and more effectively remove fat from areas where the fat volume is actually lower, such as the neck, as compared to the abdomen. The reason this is important is because overaggressive removal of fat in some areas versus others in the neck or chin can create that uneven contour. The neck has less room for error because of the thinner layer of fat. Additionally, the laser component adds skin tightening to the picture which is a very nice secondary effect from the therapy. Keep in mind this is not a laser that is used on the surface of the skin and it is not a toy. The laser is actually quite a powerful tool and should only be used by experienced hands.
Ultimately you want a great surgeon who is board certified as a Facial Plastic Surgeon or Plastic Surgeon.
traditional liposuction should do well for you but I do believe more current laser assisted technology has an edge over traditional by liposuction.
Chase Lay, MD