In the end, it doesn't make much difference. I found that the Nuvi locks out any searching while driving above 5MPH, so it's impossible to navigate the files while on the road. I mean, I can have my passenger pull the unit out and search while it's disconnected from the car, but that's a pain. Then again, it's probably a good idea to keep the driver's eyes on the road.
2010 SX4 Crossover AWD Automatic (CVT) with Tech Package