really they are both going to be about the same. They all use maps provided by the USGS. The detail, zoom level, and age of the picture is all dependent on the last time the USGS took the photo. Here at my house it has been close to 10yrs since the last pic of the area. Got a little subdivison behind me that only shows 1 house when there is 5 now.
I use GE all the time. I upload the tracks from my dogs GPS collars. To analyze the hunts. Will also use it to get an idea of where an old logging road goes. In order to get a better idea of where I may come out. Have also used it in the past when fishing a river for the first time. Can see sandbars and other structure to key on.