The audio system is perfectly functional, although you’ll probably not notice any stereo separation. It also runs quietly, with just a controlled whirr. The onboard media player is comprehensive. Sound and vision file compatibility is good, and there’s an Office Viewer, with PDF support. The Q7 runs quietly in Eco mode, with just a controlled 33dB whir. In high brightness this jumps to 38dB. All things considered, the Qumi Q7 is deeply impressive... if you can dig that deep.Canon’s LV-X300ST is a good deal larger than all the other projectors in this group, not least because it utilises a conventional lamp rather than an LED light source, but at 2.8kg it still warrants the sobriquet of portable.This an XGA short throw model (0.61:1 projection ratio), ideal for when space is limited. Build quality is high. The gloss white cabinet sports silver buttons on top, should you not want to use the credit card style remote zapper. Backside inputs comprise an HDMI, dual D-Subs, RS232 control, composite video, S-Video (something of a rarity these days), audio in/out minijacks and Ethernet port.The unit is also Crestron Connected, meaning that it will work out of the box with Crestron control and automation kit. This is clear indication that Canon sees its major appeal lying with the corporate/education marketplace. At just 1m from a wall or screen it'll throw up a large, bright images, 1.8m diagonal; pull back to get an even larger 4:3 image.

The projector is nothing, if not, really, really bright, and is easily usable in even a brightly lit room. Rated at 3,000 ANSI lumens with a contrast of 2300:1, it offers searing peak whites. You can mute these by switching off TI's brilliant Colour mode, but the result isn't as deliciously dynamic. Colours are suitably cranked too. Native resolution is 1024 x 768. There's a honkingly loud (10W) onboard speaker – good for the board room, but you’d really never choose to use this for any recreational pursuit. As a consequence though, operational noise is rather high at 36dB.Superlight at 0.28kg yet heavy on features, including integrated Wi-Fi, the titchy PicoPix PPX3614 is something of a pocket rocket of a projector. Connectivity includes a USB reader, mini HDMI connector (this is actually pretty annoying, but at least an adaptor cable is provided in the box), SD card reader, USB 2 mini port and a 3.5mm headphone jack.You can also stream to the Pico wirelessly. Just active the Wi-Fi hotspot and your mobile device with DLNA app will see it. It ships with a simple IR credit-card style remote, but there’s also a touchpad on the top of the unit. An onboard lithium-ion battery will power the unit for around two hours.

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