Lenovo ThinkPad X220 Tablet

The Lenovo ThinkPad X220 Tablet is comparable more to a laptop than its tablet brethren. The convertible tablet is powered by Windows 7 and full-fledged Intel Core processors rather than a mobile OS or CPU. It also holds  more RAM and storage than consumer-focused tablets, and the upgrade options are too numerous to list. The sturdy keyboard in its laptop configuration is just one of several business-friendly features; it can be swiveled and folded so that the X220 also resembles a slate. The ThinkPad X220 Tablet includes stylus support, full-size ports, long battery life, and mobile cellular and Bluetooth connectivity options. The large 12.5-inch touchscreen display wins over critics with its size and scratch-resistant Gorilla Glass option.

With great power come great compromises, however. The ThinkPad X220 Tablet is  much larger and heavier than consumer-focused tablets, and the base model costs more than twice as much as high-end consumer slates like the Apple iPad (*Est. $500 and up) and the Asus Eee Pad Transformer Prime (Discontinued) . At its price, some critics wish it had an optical drive, though that option is not common in tablets. Online support includes guides, drivers and a community-driven forum and knowledge base. Phone support is also available, although you may be charged a fee if your warranty has expired.

Extensive hands-on reviews can be found at PCMag.com and TabletPCReview.com. Each of those sources submits the ThinkPad X220 Tablet to thorough benchmarking and usability analysis. Britain's TrustedReviews.com also covers the tablet, though its evaluation is less intense. Few users leave feedback about the ThinkPad X220 Tablet at Amazon.com, probably due to its business-oriented focus and high sticker cost.