Dell is last to market with its Ultrabook, but in many ways the XPS 13 has been worth the wait. With a 13.3in screen crammed into a 12in-equivalent body, it’s compact yet practical and beautifully designed too. What's more it has exceptional build quality, good battery life and, thanks to its great backlit keyboard and lovely touchpad, usability is up there with the best. Unfortunately, connectivity suffers from the smaller chassis and the screen’s poor viewing angles really let the side down, meaning the similarly compact Samsung Series 9 900X3B is a far better proposition if you can afford the extra £170 or so. If not, however, the Dell XPS 13 Ultrabook is a great premium option.