Thanks jmelby. Maybe I should have done more research. I was under the impression from the salesman that the data was only available to a doctor. You're right only 50 bucks maybe I should reconsider. My 5 years with my old Respironics was pretty simple and never had any issues. So never thot I'd use...

Hey all! Did a lot of reading here lately trying to decide about purchasing my second CPAP machine. Decided on the S9 Escape. Used my S9 last nite and astounded at the difference in quietness vs my old machine. BUT.... On exhalation I hear a..... Wheez, not quite a whine, but maybe a faint whistle. ...