Featuring a larger 12in display, a wealth of chipset options and a reasonable battery life the Surface Pro 3 does a great job of showcasing Windows 8.1's finer points. However, the extra £110 Microsoft is charging for the add-on Type Cover, combined with its hefty £640 starting price, make the Surface Pro 3 an expensive laptop replacement.

Pros:
Clear display, good performance, wealth of productivity services, good battery life

Cons:
Expensive by tablet standards, Type Cover costs an extra £110, stylus can lag