gps which one is best,second best

My Garmin absolutely sucks. I have to baby-sit it every time I'm in a city because it will take me on roundabout routes that make no sense. In some cases this could be due to having a 4 year old map, but generally it doesn't even know where streets are that were there 40 years ago. And it doesn't do much better with businesses. I'm wondering if the maps are 50 years old.

Google/Verizon does that only occasionally.