I have been using Garmin GPS for years. I distrust others as I have seen and heard of major mistakes by some others.
However, I do consult MapQuest and keep an Atlas handy in route.
A major advantage of a GPS is that if you make a wrong turn or miss a turn, it will reroute you automatically. I also like the ETA feature.
On the downside, the car units may take you on narrow poorly maintained side roads, especially if you have strayed from the original route.
I am waiting to see how the Garmin RV version works before I buy one.
Life is a journey, not a destination.
2005 Georgetown 359ts
Bill & Virginia, Kentucky
Nights camped in 2011...78 , 2012...73,
Nights camped in 2013...123, 2014 ...101