Looking at setting up multiple camera on the car

i have found a device that take 1,2,3 or 4 inputs, and you can arrange the screen several ways, but my issue is, i need a PVR

i've been on fastfilms.co.uk looking at theirs, just wondereing if there are any others around?

this is theirs

£125
http://www.fastfilms.co.uk/mini-dvr1.php

£270
http://www.fastfilms.co.uk/dvx-h264-...o-recorder.php

£399
http://www.fastfilms.co.uk/HQR-1-dig...o-recorder.php

£450
http://www.fastfilms.co.uk/hqr-2-sol...o-recorder.php