You'd get more use out of a GPS and hopefully stay found with it., but getting lost is only one of the reasons you might need rescue. Take a look at your risk factors illness and injury while weighing these two options.

Also, please remember to file a detailed trip plan with someone you know is responsible. Talk with them about when to initiate a search. Have an agreed upon plan for your hike and your rescue, and then stick to it. If you deviate while you're out there, let them know ASAP. IMO, if you can't confidently update them of changes, don't deviate from your route.