I allowed my National Geographic Society membership to lapse so I could give the Kindle subscription a shot. I don't like magazines cluttering my house, I want to conserve paper, and I want my magazine subscriptions on-time even when I'm traveling. So far I thoroughly enjoy reading National Geographic on my Nexus 7. I have compared the electronic version to a print copy and I have all of the photos and all of the content. I'm not sure what's going on with other subscribers, but it works fine for me.
Why not five stars? The electronic version is more expensive than the print (something common to all magazines) and I'm no longer a member of the NGS, just a subscriber to their electronic edition. I have to assume I will no longer receive the maps, but for me that's not a big loss. To others it might be.