ugh I just started with mine on Friday, have the mask, its kind of annoying b/c halfway through the night it ramps up to 9 on pressure and leaks out the mask sometimes and blows air on my face, I have that mask on tight to! I find I wake up not as tired, but nothing life changing... I still wake up in the middle of the night. Insurance made me put a $75 copay and the results are transmitted back for 13months, just to verify I am using the device, otherwise insurance wont pay for it. After 13 months I own it. It was funny, I asked, well how much does it cost to buy it outright (Philips dreamstation), $1200, I looked online and you can get new ones for $600, highway robbery.