Just endured lengthy pressured phone call with provider of a life alert system. Lots of talk and details thrown out so fast our ears are spinning. A number of these systems advertise in AARP. Which are best and why? Wife getting unsteady on feet to point I feel uneasy leaving her for more than an hour or two. Am scheduled to attend wedding of best friend in a few weeks and am concerned. It will be in Nantucket from where there is no convenient unscheduled middle of day return. Help?