I am not better . I have help with tanks . Apria delivers them to my garage. I secure two in my car. One I use for traveling . Then I hook to the one on the cart to get out of the car . Putting them in the car is the hard part . Pulling them around is easy. I have one on a cart that sits in the garage too . I use it to get from the garage to my house concentrator. I have serious arthritis. My shoulders both need replacement surgery . I don’t have it because of the risk of my lungs getting hurt by anesthesia . They also do a nerve block. Some have problems with that. So sometimes I can’t go . If your portable gives you enough oxygen then that is good. I just need too much to use one .