It wasn't easy writing a conclusion (much less a headline) for our original Acer Aspire S7-391 review. The company's third Ultrabook was near-perfect, with a stunning full HD display, exceptionally fast performance, an extra-light chassis and one of the most sophisticated designs we'd seen on any Acer machine, ever. Even so, the battery could barely last past the four-hour mark -- a poor showing, even compared to other machines on the market. Plus, the
