One week ago I received my prize from tmart.com - Bluetooth keyboard for iPad.
It's really slim and flexible keyboard that has some convenient iPad-specific function keys like Copy,Paste,Cut, as well as adjust volume,brightness,keys for controlling music player and of course Home and Lock keys.The keyboard bring not only familiar tactical feel to your iPad but also free up valuable screen real estate so you can see and do more while typing.
The keyboard has different adjustable angles - something rarely seen on any other keyboard case.
This keyboard offers also back case for your iPad. If you don't need a keyboard you can just separate your iPad and use a keyboard like a standalone device.
If you plan on doing typing most of the time, a bluetooth keyboard with a back cover might be a better option. This thing turns your iPad into mini laptop. For productivity an external keyboard for iPad is a must-have.