Whats the Best Sat Nav on the Samsung Galaxy S2 ?

Which one is the best as i can no longer get my tom tom which i had on my iphone.
i want a good sat nav which works well on the phone
Answer #1
Navigon?
Answer #2
will give it a try thanks
Answer #3
does anyone have the latest version of navigon because i cant find it on the android site i use
Red Devil