I guess there may be some lesser known pro's that don't use it, but I can't imagine a single top ten guy that doesn't. I've done it once in my calves and it's the only reason I have any tissue down there at all. I'm planning to do it again on a few areas. It's just so expensive and doing calves cripples you for the first few days and be prepared for alot of bruising, pain, and constant need for massage and heat. The bodypart you are applying will also need a couple "pump" sets everyday. It's very hardcore, but very effective. I wish I could use it in my chest, but it's too complicated.