TUAW reviews a lot of iPad cases. That's made me somewhat jaded about new cases, and when Griffin Technology pitched me on the new IntelliCase for iPad 2 I was a bit on the skeptical side. After using this case for a few days, however, I've changed my mind -- the IntelliCase (US$59.99) is an excellent alternative to Apple's Smart Cover ($39 - $69).
Like the Smart Cover, the IntelliCase has magnets embedded in the cover that automatically turn on the iPad 2 when flipped up and turn the iPad off when closed. The IntelliCase cover is made of TPU (thermoplastic polyurethane), a material that seems somewhat harder than the polyurethane and leather used on the Apple Smart Covers. The inside of the lid is the same TPU material, which will keep it from picking up dirt and hair that are attracted to the microfiber lining of the Smart Covers.