Tablets didn’t exactly take over the computing world, as Apple and Microsoft had predicted years ago. But they have been evolving to the point where they can fill in for a laptop under the right circumstances. Still, how do you ensure that the tablet you buy is good enough for you to leave conventional PCs behind? It’s not always easy — a tablet that’s powerful enough for one person might be overly complicated for another. We have some tips to help you navigate the shopping maze.