When I am in my home country, I use Google Navigation. When I go abroad, that gets much too expensive and I use CoPilot. I have maps for Europe and so far it has proven to be great. Have not tried it on GS3 yet.
OT MaxDB, CD1, CD5, J5, GD96, ME45, T68i, X6, CX65, A925, E398, MPx200, X6-2, OT715, D600E, W810, M600i, BB8100, W880, N95-2, P1i, Ignito, W880, X1, MS1, MS2, TP851, XT910, GTab 10.1, SGS3, SGS4, SGNote 10.1, Nexus 7 II