My two cents on the PLB thing. As a former SAR instructor and past distributor of both SPOT and ACR 406 products I'd always recommend a 406 over the SPOT as your personal device unless your airplane is already equipped with a 406 ELT. I've done a lot of testing in various use scenarios and found it was relatively easy to put the SPOT in positions where a signal would not get out. You can mitigate that risk by always flying with a SPOT in tracking mode rather than relying only on a 911 broadcast once downed. At least you'd be leaving behind a trail of trackpoints that *might* point your rescuers the right direction.