FWIW, the other reason I didn't go with a regular PLB was mentioned by @hikermor - the ability to communicate with SAR. I can answer their questions, provide vitals if needed, identify landscape features to help locate me, or inform them of nearby hazards...  They're trying to save my butt so anything I can do to help them help me is a good thing.

A PLB just says "I need help, come get me"

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“Between every two pine trees there is a door leading to a new way of life.” (John Muir)

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