SkiTracks shows you where you are on the mountain in satellite and "standard" view. Satellite is cool because it will show you the ski runs so you know exactly where you are. It doesn't impose the resort ski map over top though if that is what you are looking for but seeing your location on the mountain with the runs on the map is useful.
Getting out the phone by the side of a run to see where you are is a bit impractical. Digging in to get out the phone. Handling with mitts or gloves, risk of dropping it. Operating it. Seeing it. I just wait until I'm inside. But if you want to do it, it will show you where you are in the resort.
SkiReport is probably the best for reports on conditions etc. I like that when you tap one of the ski areas you've added as a favorite, it includes the cams as one of the menu choices.
SkiReport is also more global in that you can create your list of favorites while the iSnows are state by state.