I generally find no issues with Waze. It does occasionally give me stupid navigational advice where a different way ends up saving time. But that's rare. Also jumps every once in awhile.

All in all, 4.7 stars out of 5. And now that I have C3P0 (Star Wars) as the voice, it rocks!

One thing that I'd like to see is integrating Waze with parking apps to help find parking spots and/or pay for street parking.