I spent part of this afternoon using my 3G iPad doing some Geocaching. I wanted to see how good the GPS in the unit is. The test was very satisfactory indeed. I would rate it's accuracy as good as any standard GPS that I've used and better than my iPhone 3GS. I found that with my iPhone I could get within approximately 10-15' but the iPad would get within the normal 3' radius. I found a couple of caches that I didn't find with the iPhone. I do not want to give the impression that the iPhone will lead you directly to the cache, it won't. It will, however, get you as close as any mid priced dedicated GPS unit will. It is a little clunky carrying something this large into the woods, but it really comes into it's own with the much larger map on the screen than any hand held GPS unit. Groundspeak, the app developer, does need to address the problem of making their app iPad friendly. At 2X the map is not as useful as it could be if the app used the screen as a dedicated iPad app. The app also needs to be freed to work in the landscape mode. These were both problems that I easily worked around. I'm now sitting in my easy chair writing this thread -- ain't life grand?