@spider109 - Everyone is very excited about the Pari Boy Go. It makes me want to go out and get one myself. But, you've brought up something to consider. My pulmonologist says that my BE is throughout my lungs so is the slower method better for me? I think it is something that I'll check with the doctor about. Unfortunately I'm finding that the doctors are not able to know about all the various devices. It's a shame, but I do understand and appreciate all the comments and experiences everyone has and are willing to share.