I agree with the iPad folks. Been using an iPad and a Samsung note for two years now and have come to the conclusion for the third time (one phone and a different tablet) that Android OS just isn't up to the job.
The Samsung would loose GPS and freeze the map. I would turn on my iPad and it has connected every time from a cold start. When you are up in the mountains with no cell phone data service the GPS becomes critical for navigation.
Software is a personal choice but I always keep my PDF maps up to date. Have never had to fall back on them but they are there.