The one I have, the Garmin StreetPilot i2, I have suction-cupped to my windshield just to the left of my rear-view mirror. It doesn't block sight of anything and it a fairly convenient location to glance at it while driving. It does keep me from using my sun visor, though. Not a big deal for me since I use one about twice a year. Probably less of a deal for you living in the Pacific Northwest now.