The ultra, ultimate, priciest, most badass edition of Call of Duty: Black Ops II's special editions is the Care Package because it comes in the biggest case and includes a remote control thing. Activision officially calls it the MQ-27 Dragonfire Drone, but really it's a flying quadrotor RC toy that's been around for awhile and re-purposed for Black Ops II duty.
Beyond the remote control flying thing, you're getting in-game goodies like the Nuketown 2025 and Nuketown Zombies maps/modes, the official game soundtrack, a special in-game weapon camouflage and the collectible steelbook for the game.
The Hardened Package takes away the RC device but leaves all the other physical and in-game content bonuses. The Digital Deluxe Edition, as you might guess, doesn't even give you the steelbook, but it does give you all of the cheaper, er, in-game content found in the other special editions.
We won't tell you how much each of these costs because we want you to be surprised and shocked at the outrageous-ness of it all. All of this stuff should certainly make the game more fun when the controller is in your hand, right? No? Why not?
All three packages come with Call of Duty: Black Ops II. Almost forgot to mention that.