Just bought one of these today and gave it a whirl and its pretty damn good from some of the crap ones I had. Did well in the autoexpress review too (made number 1) has a little light on it aswell.
A useful gizmo to stick in the boot for weekly maintenance checks.
Just a quick review :) and a thumbs up from me.
Oh and its on sale too at £17.99 which is a bargain ? from what it was at £37.99 ... I think they are making way for there new digital inflators at a guess.