Griffin Survivor - military grade, waterproof, completely encloses the iPad, even the screen (some cases, like the Lifeproof Nud, don't cover the screen, which IMHO is a mistake). I've had one for about 3 years, it's withstood a lot of drops, shocks, and so forth. Anyone riding with a tablet needs something waterproof and shockproof as possible, IMHO.