Which is the best brand for sat nav on a mobile phone?

I heard tom tom was the best, but what about other brands? can anyone tell me of their experiences with other brands, whether it was on your mobile phone or in the car?thanks
Answer
Mine has copilot pre-installed and it is not too bad.


Related Questions
The best mobile phone on orange?
I am due a free upgrade on orange contract mobile and gonna post this brand new...
Whats the best mobile phone???
Whats thes best mobile phone comeing out this year ???? and what mobile have you...
Which is the best brand for sat nav on a mobile phone?
I heard tom tom was the best, but what about other brands? can anyone tell me of...

< Back