@sunnyflower there are 2 different quad canes. As the name implies a quad cane has four feet at the bottom and therefore can stand on its own. It can have a wide base where the feet are further apart to cover a bigger surface area on the ground or the base can be narrower to cover a smaller surface area. I have both. The narrow base I use for short walking distances within a parking area and store or the wider base I use outside my home to cover a bigger surface when walking on the lawn or graveled driveway. I believe the wider base helps with my walks on uneven surfaces better.
As for the transport chair it is basically like a wheel chair with the difference of someone having to push the transport chair. It has 4 wheels to cover most terrain. For lightness an aluminum frame is better and of course more expensive. I just picked one that provided the best features for what I wanted to use it for. I believe the aluminum frame chairs weigh about 20 pounds. I bought the lighter chair to make it easier on my husband or for the one who will be lifting or pushing the chair. Best of luck! Let me know if I can help with more info, Toni

Sunny, if you need a motorized chair then the wheel chair will be for you. Find out what coverage you have with your medical insurance and if there are any limitations. I did with medicare and found out that it would be covered only if my doctor’s documentation
proved I needed the transport chair indoors when I could not wheel my self. Basically I was disappointed with medicare for not providing any help when I needed it for long distances outside. Where is the help when you need it? I purchased my chair through Amazon under a payment plan which made it more affordable.