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Cons: Selection of third-party applications not as good as iPad’s, but wider than Kindle. Screen resolution lower than iPad’s. No option for wireless broadband. Pen sensor slightly shortens battery life.

Microsoft Corp.’s Surface:

_ Price: $499 for 32 gigabytes of storage, $100 extra for keyboard cover. $699 for 64 GB version, includes keyboard cover.

_ Screen size: 10.6 inches diagonally

_ Screen resolution: 1,366 by 768 pixels, at 148 pixels per inch

_ Weight: 1.5 pounds.

_ Cameras: Front and back cameras

_ Battery life: 8 hours.

_ Operating system: Microsoft’s Windows RT.

Pros: Storage can be expanded with microSD memory cards. Comes with free Microsoft Office software. Models running full version of Windows 8 coming soon, offering compatibility with programs available for traditional Windows computers.

Cons: Operating system lacks good track record on tablets. Selection of tablet-adapted third-party applications small. No option for wireless broadband.

Google Inc.’s Nexus 10

_ Price: $399 for 16 gigabytes of storage, $499 for 32 GB

_ Screen size: 10.1 inches diagonally

_ Screen resolution: 2,560 by 1,600 pixels, at 300 pixels per inch.

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