iPad keyboard case roundup: Logitech Folio vs. Belkin Ultimate vs. ClamCase Pro

Listen, you probably shouldn't be here. The iPad is a pure and carefully honed machine. If its designers wanted you to use some kind of ludicrous hybrid contraption that fused a tablet with a physical keyboard and doubled the weight, they'd have built one for you. But they didn't. So go away and don't come back until you've saved enough money to buy a MacBook Air. (Still here? Good, because we're about to compare three of the latest iPad keyboard cases: the ClamCase Pro, Logitech's Folio and Bel...