Need a gps for my car that offers voice guidance and automatic route recalculation in case you miss a turn and detailed street level maps.Don't need any "fancy" stuff like music or video playback. How is this one :- http://www.mapmyindi...t/overview.html . Is the 8.9 cm screen good enough or do i need to buy one with a bigger screen?? Also what abt the software.Does it come free or do you to purchase it additionally ?? What abt yearly updates? Anything else i should pay attention to while buying one?