Viewsonic’s PJ506D may not be up to the same specifications as its competitors, but it provides high-brightness projection at a low cost.

Dell’s M209X is light, well-priced and has a high brightness level. If you can look past the fiddly remote, it’s a great portable data projector.

For a model that's marginally portable the Sanyo PLC-XU105 produces an incredibly bright picture. It doesn't display the richest and most colourful pictures, however.

There are smaller and lighter portable projectors available. If you want a model that's able to reproduce colours well and give great presentations, the PGF312X will fit the bill.

The Viewsonic PJ551 is a model that targets the budget-conscious consumer, and it performs solidly. It may not have class-leading specifications, but for the price it's definitely a good choice.

The DX130 produces a bright image with strong colours for a portable projector. However, it is hampered slightly by the DLP 'rainbow effect' and its noisy fan.

Acer's P1265 is large and heavy when compared to other portable models, but has impressive brightness and image quality.

Toshiba's miniature TDP-P9 offers a portable solution for business presentations, with the experience only slightly hindered by a loud fan.

The Infocus Work Big IN10 is as tiny as business projectors come and can produce a reasonable image after calibration. It would best be suited to medium-sized boardrooms due to the throw distance and heat production.

A great combination of portability and functionality, the Panasonic PT-LB51E is an attractive option for businesses looking for a lightweight and easy to use projector.

The PJ358 doesn't have the best performance on the market but it remains a fairly good projector considering its price tag.

If you are in the market for a good all-round portable projector, the Viewsonic PJ258D will certainly fit the bill.