There are basically two alternatives to traditional tumescent liposuction.
1. Invasive "Adjuncts" to Liposuction.
2. Non-invasive Body Contouring Devices.
With any of the invasive "adjuncts", the surgeon must still perform true liposuction to get results. These include laser assisted liposuction (Smart Lipo, Cool Lipo), Power assisted liposuction, and Ultrasound assisted liposuction. These methods use cannulas that produce heat, vibration, or ultrasound waves to help break up the fatty tissue and make liposuction potentially easier for the surgeon.
There is still very little evidence that any of the invasive liposuction "adjuncts" improve results greatly over traditional tumescent liposuction. They can increase cost, and risk. Of these options, I favor Ultrasound Assisted Liposuction (VASER liposelection).
MOST IMPORTANT: the quality and experience of the surgeon
2. Non-invasive Body Contouring Devices.
These are devices that use heat, cold, or ultrasound from the outside of the skin to try and shrink fat. (Thermage, Cool Sculpting, Liposonix). These are best for patients with less fat to remove - as they can not take off large volumes.
My favorite non-invasive body contouring device is ultrasound (Liposonix). It is a device that sends high frequency ultrasound waves beneath the surface of the skin focused at a depth of 1.3cm. It completely bypassed the surface of the skin. Studies show that it can remove an inch from your waistline or hips. Not bad for a non-invasive procedure.