Apple maps wasn't so good at first for my local area - many addresses were inaccurate. That has improved significantly.
I commute a lot every day and switch between Apple Maps, Google Maps, Garmin, TomTom and Waze.
I prefer the aesthetics of Apple Maps over Google Maps. However, with both my 5s and my 6, Apple Maps has a slight lag. I will have already passed a street and the map will show me approaching it. When I stop, Apple Maps catches up. There is only maybe 3 seconds of lag, but its there. This does not happen in Google Maps.
I am very OCD. Either one should be just fine for most people.