I have had nasal masks which didn’t work because of mouth breathing. Then I switched to a full face mask and had to endure baggy, sore and watery eyes because of air bleeding out the top and sides. Used the full face mask for years and had such poor sleeping behaviour because of air noise and irritated eyes. Then, recently read an article about side sleeping with CPAPs and how the AirFit 30 style was a best solution. Have had the best night sleeping in years since the switch. Very little noise (just me breathing) and pretty darn comfortable. Needed a week to feel confident, but now I am sure it is better than my previous masks.