Lenovo’s ThinkPad X1 tablets are a lot like Surface Pros on the inside, except they come with they keyboard cover (sporting the iconic ThinkPad key design, of course), work with some unique add-on modules, and are a lot cheaper, at least with today’s deal. Prices range from $500 to $950 depending on the specs you choose, but they’re all solid values if you like the idea of a convertible Windows hybrid computer.