Hi . Many people in this community benefit from portable oxygen concentrators. Have you asked your doctor for a prescriiption? They are usually covered by insurance, so a prescription might save you some money. I hope you get feedback from others in the community. In the meantime, here is an article about the search for a portable oxygen concentrator: https://copd.net/living/portable-oxygen-concentrator. I thought you might find it helpful. Best wishes. - Lori (Team Member)