I use Sygic myself! I love it! It's great because when you purchase a map pack like North America for example you can download by state so you can save space and download only the places you need! Plus you can import POIs from various websites which is nice! Also the voice nav doesn't sound robotic, I have mine set to British English and it sounds like a real person!
Sent from my Nexus 7 using xda app-developers app
Samsung Galaxy Nexus CDMA/ LTE: CM10 Nightlies
Nexus 7: CM10 Nightlies