Yep, it's a great emergency back-up when I don't have my actual GPS unit. The main disadvantage to Amaze compared to a GPS unit is that it does not pre-load the maps. They are downloaded by the data connection as needed. This makes sense because the maps would take up a huge chunk of memory. However, Amaze recently took me on a backwoods route that caused me to lose my data connection, and at that point, I had no idea where I was.
Also, the maps cannot show correctly in landscape mode. The car I was driving really only had a place to put the phone on its side and I was trying to keep it plugged in. But the voice and the little symbol about where to turn or merge next was helpful. So, it was better than nothing - well, until I lost the data connection, then it was nothing.
