Now that Sony and Samsung have unleashed their high-powered next generation of flagship phone, it’s high time to compare them across the board: design, specs, features and value. Which of these Android range-toppers should you opt for? Let’s take a detailed look… PLASTIC VS METAL There’s no doubt about it: Samsung Galaxy S5 is the best built of the S series yet. Its dimpled matte backside (initially available in four colours) is easy on the eyes and comfy in your hand, and a welcome change from the ill-advised fake stitched leather look of recent Galaxy Note models. It’s a solidly…