I was a big Garmin customer, lover and even designed my own maps for them for my own use. So If I were to ever go back to a dedicated GPS it would be Garmin, specially now that most of their units come with free maps, however..... I dont see that happening as long as Google maps continues status quo. If we are talking turn by turn directions in roads Google maps just simply stomps every one. You can create POI's and save them under a number of labels (favorites, place to visit, saved, etc). You can even save icons in your phone home screen for those daily destination... now you ask why if you go to a place daily you need directions? Read traffic updates.... every morning after stopping my alarm I click on my work icon which fires google map, destination already set and I can see how will my commune look. I do that every time I am going anywhere I can expect traffic. Saved my bacon many times.... You can also save your maps to your phone. In our trip to Greece we did not know if we would have coverage and if we used our phone we would have paid $10 a day. So, we downloaded the google maps for the entire island, never needed data for gps the 9 days we were there. Of course, having the data off we did not got traffic updates but there is no traffic in santorini greece to speak off, lol! Any offline data is updated as any new info is available, automatically or on demand. Google has the most updated map data. As far as using the phone, having a stand alone gps will not stop it, heck, when I am using my phone as gps I set my phone in blocking mode, no calls nor text comes thru in my screen except the short list of people I allow. I dont want the text/phone call interrupting the gps. Good luck!!