Hi there- It is first important to realize that all of these devices will require you to undergo a liposuction procedure. The only difference is the approach to the treatment of the fat prior to its removal. Because they all involve liposuction, and this is in fact a surgical procedure, it is very important that you "do your homework" and find a surgeon certified by The American Board of Plastic Surgery who has the years of training in liposuction necessary to give you the safe experience and superior outcome you deserve and desire. With the amazing number of machines now available to remove your fat, there has also come a equally impressive number of providers marketing themselves as "liposuction experts" (who completed a few days of training by the salesman for the device), promising that because they use one device or another that you will achieve a superior result. This is not unlike someone saying to you that because they have access to Tony Stewart's racing car that you will be able to win this weekend's race and make a million dollars. Tony Stewart wins races because he is a great racing car driver AND he has a great car....This is no different... Getting the best outcome from a body contouring procedure depends most on finding a well-qualified and experienced surgeon, and much less on the device used. So please be careful. Most of these people are so aggressive in their marketing of these questionable devices because they are, in fact, not trained plastic surgeons but rather are either not physicians at all, or they are doctors with core training which would not have prepared them to do liposuction. You may have read recently about a death in my home state of Florida after a healthy 40ish year old mother had liposuction performed be a rehabilitation medicine doctor. Amazingly, I know of eye doctors doing liposuction as well. The device used can affect the overall experience, however. Despite the claims of the manufacturer and the practitioners who plunked down the large sum the device costs, Smartlipo has never been proven to shrink skin better than tumescent liposuction. SmartLipo, SlimLipo, Coolipo all use a laser to destroy the fat cells, allowing them to be removed by liposuction. My problem with these is that, first of all, as a scientist and doctor I am offended when false claims of benefit are made, and that because the lasers will burn whatever you point them at, I worry that your nerves, blood vessels, muscles, and skin may be injured by the laser. Bottom line (and in my opinion)- there is no benefit to these devices, they are expensive (meaning that the cost to you, the patient, will be higher as well), and the risks are higher. Tumescent liposuction is the gold standard to which all other techniques must be compared. It has been proven to be safe and effective over many years (provided that it is performed by a well-trained surgeon). It involves the injection of a fluid into the fatty tissue layer that causes blood vessels to shrink and the fat to expand, making it easier to remove and lowering the risk of a complication. VASER lipo involves an additional step, in which the fat (after injection of fluid but before suction is applied) is treated with ultrasound energy. Unlike the laser filaments used in SmartLipo and the other devices mentioned above, the VASER probe is blunt and the ultrasound energy it uses is much more specific for fat, so that the risk of injury to the blood vessels and nerves, as well as the muscles and skin are much lower. This is seen in the patient experience of reduced swelling and bruising. Each time a new (revolutionary!) liposuction machine comes out, I think the most important questions to ask are not "Does it work?", but rather, "Does it work better than what is already available, is it less expensive (not more), and is it safer than what is already available?" The VASER (in my opinion) passes this test, while the laser based devices do not. Please know that I have no financial relationship with any of these companies and have personally tried each of the discussed technologies myself on patients.