I have a Life Alert, but it wasn't until I began falling alot, living alone, and now am SPMS. The newer models look really cool, they can see if someone is in your house or if there's a fire.
Actually I had to use mine today for the first time. Set it off accidentally twice before, but my battery in the powerchair "pooped out" while I was sitting in my recliner. The phone wasn't handy and of course I can't move much. Got up my nerve to press the button that activates the sound EMERGENCY -- EMERGENCY -- EMERGENCY -- really loud. My little dog didn't like it at all. She was still in her crate and yap, yap, yap. The person comes on and asked what the emergency was. I just needed them to contact one of my "contact" people since I was stuck! The guy stayed on the line with me until my friend arrived.
It's $49.00 a month, but a day like today, for me it was worth every penny. Good luck with whatever you decide!!!