I would probably pay more for AV8OR updates, but Bendix-King's failware requires Windows. It's such a huge pain the posterior to borrow Windows systems for updates that I eventually gave up. Otherwise AV8OR is pretty amazing. I could never imagine before that a device with postage stamp sized screen can be this useful. I was too used to large screen devices like iPad and would never buy one myself. It was a present.
But if you have cockpit space, iPad should win on general utility. You can get airport diagrams and whatnot. Use it for websites like DUATS.