I'm really impressed with street-view. It seems to have turn-by-turn navi also, but I'll have to check it out later. Overall the app looks nice, but the new UI is extremely confusing and will need a lot of getting use to. My only complaint is that it's a bit sluggish on my iPhone 4. Eventhough it's a nice app, I think I'll eventually switch back to Apple's native Map later when it's improved because it's easier to use.