Road piolate navigator is an excellent option. Review on Mapmyindia

The use of navigator is not only limited for frequent travelers but for everybody because in everyday life someone has to travel (may be within the city). It's not possible to anyone to know the currently staying city completely. This device helps you to reach your destination very precisely through very convenient routes.

1)the most important feature I found is when device tells you  to take a right turn and you takes left turn then it recalculates the next possible route within seconds and take you to your destination through new route. So forget about the routes just click and drive.

2) the night mode which is a beautiful black and green color combination help you to drive in the night wtihot distracted by the display light from the device.

3) the voice announcement help you to keep driving without looking into the map while driving.

4) very easy to use - if you want to search petrol pump near to your current position within seconds it on your screen.

i would recommend all of you should have this device. and the best part is the price is very affordable only 7990/- it has almost all the cities with very detailed maps.

Regards

Pradeep

New Delhi