I was sent off 1.5 miles away on the same road, to a wallgreens, when my destination was a restaurant with friends. I came late. It was humiliating.
I live outside of the USA, and Apple maps consistently screwed up to the point that I've deleted it.
So, one anecdote for, one against, it evens out for now.
Eh, I cross reference Google Maps with Waze all the time back when I used it, but I wouldn't dare call Google Maps unreliable. It costs nothing to do, so why wouldn't it?
Unless "back when I used it" refers to pre-2013, I'm not sure I'd describe that as cross-referencing.
Disclaimer: I'm from New Zealand. Map data is constantly out of date here, no matter which vendor you deal with. Google, Apple, Bing, OSM, whatever. For me, double checking is no problem.
Apple Maps UI: A big map, with a search bar at the bottom. Simple and nothing but the essentials.
Google Maps UI: A page full of ads, a map full of ads and ads masquerading as recommendations. Plus five tab bar buttons at the bottom to not accomplish very much.
I've switched to Apple Maps simply because of its better UX and how much easier the app is to use. As far as I can tell, their mapping and navigational data in Canada is every bit as good as Google's. The only thing keeping Google Maps on my phone is their superior reviews. Once Apple replaces Yelp reviews, I'll jettison the Google Maps app into the sun.