I also tried the Afflo vest at least two different occasions in the past two years. First year tried for about 3 months, not every day mind you but at least 2-3 weeks straight one time and it didn’t seem to do much. I then talked to a representative of the company and he told me, “oh you have to use it 3-4 weeks every day before you’ll see any effectiveness”. Does that make any sense!!! If it does, please tell me how and why!! I still have it and use the medium setting as prescribed by my Pulmonologist. I use it occasionally, and do postural drainage while using it and it seems to help a little bit. For me it definitely does not help at all if I’m walking around with it on, I think gravity plays a major role in that aspect of it. Anyway I don’t think it’s worth the price my distributor says they charge Insurance, which I was told is around $10,000.