I switched as well, for different reasons. Some things I found that I liked about apple maps: its navigation has speed limit information and I much prefer its design. It seems less busy, and it gets out of my way. Something about google maps just felt really cramped. I know that sounds really subjective, but I enjoyed using one more than the other.
That said, google has better directions and estimates. And maybe that should trump all. It hasn’t been enough of an issue to convince me to reinstall.