The Lenovo ThinkPad Z50 business ultraportable is ready to work hard, with ruggedized construction, a hot-swappable battery, and an Intel Core i5 processor.

Lenovo has successfully shrunk its standard business notebook down to what was once known as the sub-notebook category, and is now a more commonplace size as laptops benefit from the push toward miniaturisation.

With its sharp screen, comfortable keyboard, good performance, and durability features, Lenovo's ThinkPad X250 comes as close to perfection as an ultraportable can. And how does two-day battery life sound to you? ...

You'd be better off buying a high-end consumer Ultrabook than purchasing the X250. It doesn't perform exceptionally well and it isn't pretty, but it has lots of ports and a hot-swappable battery.