The decision to take a PLB shouldn't be based solely upon the degree of remoteness. Assuming you'll file a trip plan with the appropriate folks, even under go circumstances you could easily be several days from anyone even realizing that you are in trouble. I sure they will most likely find you, but whether it's a search and rescue effort or a recovery effort for your body depends upon what type of accident that causes the emergency or survival situation. It's possible that you could be so incapacitated that you cannot take care of yourself even for the amount of time required to locate you.

If it were me heading of into the wilderness on a solo trip, I would spend the money for PLB. Consider it trip insurance.

P.S. if there are so few PMA permits issued it's also going to be something extraordinary for the rangers too. So they'll have less experience in noticing something may be amiss and may not have much experience in SAR efforts is such circumstance.