I have seen many times on other RV forums (or any forum really) someone will ask about which is the best GPS unit or a similar question. The conversation usually ends up with:
- a percentage of people arguing that a GPS is a waste as their cell phone does it better
- a percentage of people arguing that a GPS is not to be trusted and they only use paper maps because they got lost following the GPS
- a percentage of people arguing one brand over the other, usually Garmin versus Rand McNally on RV forums as Camping World sold Rand McNally
- a (small thankfully) percentage of people arguing they will never use a GPS because the government can then track them
All I can say is that this is all a personal choice and I am thankful that we have so many choices and options.
I prefer a stand alone GPS with a big screen, 6 inch or larger. My reasoning is that:
- the large screen is much easier for me to read while driving
- the large screen GPS units also have the space for other information like direction, elevation, time to next stop, and current speed limit
- we can set the GPS to give me directions while my copilot uses her cell phone for finding rest stops or attractions, or even as a phone
- with the stand alone those stops the copilot just found on her phone can be added to the GPS 'on the fly'
- I like the Garmin ones because you can plan a whole trip on the computer and then transfer that to the GPS unit
- I dislike the built in units because the cost of upgrades is simply insane, you cannot work on them while moving, and the screen is in a fixed position which can make glare an issue
Those are my reasons but everyone needs to decide on the best solution, for them. And fortunately we have a lot of choices.
I do think it is important to think of a GPS unit, whether cell phone, stand alone or built in, as a navigation GUIDE. It should be used in combination with road signs, paper maps and common sense. If you plug a destination into the GPS and head down the road without another thought to where you are going don't be surprised if you end up on a gravel road in the middle of the desert.
A guide book I read on wilderness navigation answers the question: How do I keep from getting lost? with: By constantly being aware of your situation at all times and not blindly following a trail or course without questioning periodically if that course is still valid. That holds true of GPS units as well as any other method of navigation.