The Microsoft Surface with Windows RT arrives a full two years after Apple reinvented the tablet market. Microsoft and its partners had struggled along valiantly with convertible notebooks that could work in a tablet mode, but they were just too heavy and impractical. Within the first several months of the iPad launching, it quickly outsold the sum total of all Windows tablet PCs ever sold, even though they had been on the market for years. So the question is, has Microsoft managed to bring something new to the table? Read our full review of the Surface RT to find out.