I have used the ResMed every night for over four years, consistency, cleaning, and replacing the parts are the key. The equipment (cushion, headgear, hose, filter, and the chamber should be cleaned daily and replaced often for the most effective results. Before my therapy, I had 80 events an hour, I started out at 15 pressure; currently, I'm at 9 pressure, 1.2 events an hour, and my score is high each night 90 - 100. The CPAP machine saved my life, and now I sleep well every night, refreshed in the morning. I hope my experience with CPAP will help.