If your thinking about getting an I finder H2O C as your only gps better get a good magnifying glass.I've got one and the map card as a backup can hardly see the features,I know,my eyes aren't what they used to be.I'm glad it's only my backup.If it's your only unit go with the full size screen,at least a combo unit.
Its an excellent portable unit for the quality vs. money...I use it in the car too and while you need to zoom in / out as needed I don't find that to be a problem.
