I have had my machine for over 10 years. My husband got his just 2 years ago. I was surprised at the fewer sore throats I had because I wasn't sleeping with my mouth open. I also have more energy.
I have the mask just for the nose, hubby's is the full face. My sister just got her machine last month and is wanting the pillows that sit under the nose (like hospital oxygen).
As someone else said, they are not sexy by any means but you get a good nights sleep!
We have even modified our small trailer so that we can use our machines when camping! I won't leave home without mine.