Amazon is plotting a big change to its Fire tablet lineup following years of escalating gripes from consumers and app developers over the company’s homegrown operating system. As part of a project ...

Amazon has been selling tablets with a forked version of Android called Fire OS since 2011. The current lineup includes a mix of budget and mid-range devices with starting prices between $60 and $230.

Over the course of several weeks, I’ve been putting multiple tablets through their paces to figure out which one is the best for different scenarios. If you’re a pro who wants a tablet to work on, I ...