The slim and highly portable VPL-CX20 from Sony is stylish, powerful and easy to use. It’s Sony’s lightest and most compact projector -- at 1.9kg it weighs a whole kilogram less than the lightest of the rest of its siblings. Its sub-A4 footprint and 5.2cm height also make it easily portable: it’ll fit into most laptop bags, often at the same time as the notebook itself. The XGA-resolution VPL-CX20 costs a relatively steep £1,130 (ex. VAT).