Apple Maps: After a disastrous start, is it worth using yet?

After a start rockier than most of the terrain it covered, Apple's Maps app has changed out of all recognition. Is it worth using now? When Apple Maps replaced Google Maps as the iPhone's default mapping app in autumn 2012, it wasn't an unqualified success. Though the maps themselves were attractive, and extra features like Flyover with indepth 3D renders were well-liked, there were lots of problems. A farm called Airfield in Ireland was labelled as an airport, leading to fears of planes trying to land there.