Medical Alerting Systems

My mother is currently using Medical Guardian Premium to monitor for falls and emergency alerting. After 6 months, the products inconsistency is troubling. She will be reading a book (or other latent activity) and the alarm goes off. Yesterday she actually fell off a chair and the alert DIDN'T go off. Fortunately she wasn't hurt... 90 yrs old with no spleen, and still tough as nails. An ambulance then shows up at her house 3+ hrs later responding to the "emergency".
We are considering switching systems, but research is tough due to reviews based on advertising or click-through revenue . Any feedback is appreciated !
We are considering switching systems, but research is tough due to reviews based on advertising or click-through revenue . Any feedback is appreciated !