Panasonic Toughbook CF-30 with Delorme Earthmate GPS. Typically run ArcView 9.2 but often also run Delorme Topo USA with state specific USGS quad data. Nice thing about the Topo USA is I can turn current road data on/off over quad imagery. Recently also figured out how to convert shapefiles to display in Topo USA so I'm using it even more frequently.