Lou's GPS Systems

I’m interered in purchasing a GPS system which I can change inside my home and now have cords in my car while driving

I just bought a car and now I am looking for a gps system that will take me to work and take me home safely. Do all gps systems do this and if so which type? Have you guys ever had a gps system that caused you to be lost?
When I mean "getting you home safely," I’m talking about does the GPS give you directions on how to get home.

I travel a lot, I would like to purchase a nice (affordable) GPS system that I could used anywhere inside my car.,

I am looking to buy a portable gps system that I could move from car to car.