I agree completely with Rallyroo - decide what application you'll use and then find the operating system that supports it best and then look for the tablet that works with that OS. For instance you might decide you prefer AlpineQuest. In that case you'll need an Android tablet. On the other hand you might prefer PocketEarth. In that case you'll need an iOS tablet (iPad). Even with applications that support both operating systems, like GaiaGPS, some folks have found those provide better functionality on iOS or Android. It probably sounds like a PIA to do this before getting a tablet and hitting the two-tracks, but it might serve you better in the long run.You may want to test out couple of your friends tablets to figure out which app you like. Then decide which platform to go with: Android based tablet or Apple iPad. Some apps are only built for one platform.