Apple Maps. I’ve been using it as my primary maps app for about an year and it’s been pretty good. I live in the bay area so YMMV if you live somewhere else.
- no support for roundabouts: it's really hard to determine where you have to leave, and the spoken hints are not helping. Why not displaying a top view of the intersection/roundabout like other navigation devices do?
- no good support for leaving a highway. If the connection is non-standard the speech commands seem off/hard to understand. Top view again would help.