my 2 cents, as for the "Emergency Locater" part of it, u can not beat a Personnel EPIRB. If u hit the button they are coming and they will be able to DF you. of course it is strictly a SOS unit.
also just throwing it out there, a, "all in one" unit is great, but keep in mind if the unit goes ka put u have nothing.
regardless of his choice, something is better than nothing.