Photos: Navigating the GPS navigators
The Harman Kardon Guide + Play GPS 810, which sells for $600, "comes with a toadstool-shaped control knob that attaches to a dashboard, console or steering wheel, and lets you control the GPS unit wirelessly," Pogue said.
He called the software "clean and responsive," and noted that like its rivals, it offers either an overhead 2D map or a 3D view, which is "like seeing the landscape from the cockpit of a helicopter."
