Stand-alone GPS or smartphone?

Our primary GPS is a Garmin Nuvi, and I have the Co-Pilot app on my phone as a backup. No matter which GPS setup you use, never set the options for the "Shortest route" or similar. Instead, use the "Fastest route" or similar setting. The shortest route can follow the cows to the barn if it saves a few feet, while the fastest route may be a bit longer but will save time, usually by routing over better roads. That "Shortest route" setting is what got at least one of those families that were trapped in snow on unmaintained forest service roads in trouble along with their lack of common sense.