Tablet PCs are quickly making their way into the mainstream market, and consumers are actually buying into the idea of inputting data with a digital pen. But convertible tablets—ones with a built-in keyboard—are really the ones gaining momentum in the mainstream, whereas slate tablets (which have no keyboard) are more prevalent in specialty environments such as health care and field work. Motion Computing produces some of the best slate tablets in the world, and its latest offering, the LE1700 ($2,457 direct) lives up to its legacy. If you spend most of the time working on your feet and want the lightest tablet available, with a big screen, then hands down, the LE1700 is the best option available. The majority of tablet users, however, are better off with something that looks more like a laptop.