Hello, Thank you for your question. What matters most, is not the tools used, but the artistry and skill of the surgeon. Still, the best surgeon knows which tool to use when. In traditional liposuction, a saline solution with lidocaine and epinephrine is injected into the fat to reduce pain and bleeding during fat removal. Next, a thin hollow tube called a cannula (connected to a vacuum) is used to avulse and suction the fat from the undersurface of the skin. VASER stands for Vibration Amplification of Sound Energy at Resonance. It is different from regular liposuction in that it uses ultrasonic energy to liquify fat cells that are then suctioned from the body. The ultrasound is calibrated to target fat cells, minimizing trauma to nerves, blood vessels, and connective tissue. Vaser is more effective for denser tissue found in the deeper layers and in the flanks. Vaser causes less damage to the surrounding tissue, meaning there is less bruising and swelling and a faster recovery. SmartLipo uses laser technology to liquify fat cells that are then suctioned out of the body. It also seals the blood vessels which tightens skin and reduces swelling, bleeding, and bruising. SmartLipo laser has the added benefit of causing skin tightening below the surface of the skin in the upper layers of fat. “High definition” liposuction typically refers to surgeons using liposuction tools to sculpt a chiseled appearance over the patient’s natural musculature. This can be done with a variety of tools and often includes strategic injection of the patient’s own fat in areas overlying muscle. As the success of these techniques relies heavily on the skill and artistry of the surgeon, it’s best to only seek high definition body contouring by a body physique expert. Best wishes, Dr. Moein