Thank you for the warning...I really need to do my homework before I get anything. I haven't researched walkers at all, but the upright ones seemed so much better because you don't bend over them. I hadn't thought about how stable they are. I was encouraged to learn my balance problems will probably improve if I have the plication surgery to tie my paralyzed diaphragm down...but I'm putting that off for as long as I can. Nancy