I bought one of these Labgear FV400RF two weeks ago, and for the first week it worked fine, and i was very happy with it.
Like everybody else i bought it as my old tv has no scart socket and i found that this Labgear was the only available box option which could help out in that department.
The second week my dad wanted to try out the video ability for recording off it. When we plugged it in there was a red background screen (we believe that it wasn't reading all the colours correctly- and not green and the blue colour as well.)
In the end with trying to get it working with our video recorder, it just wasn't working, and soon after all the power just went. We couldn't get it working again properly even on the digital channels, something blew inside it and i had to send it back.
Amazon were great (like always!) and gave me back a full refund.
Maybe we were unlucky and got a duff one? Or maybe the system doesn't like being fiddled around with it too much..
Either way i'm not sure whether to 'chance it' and buy another one, or to wait and save up and buy a flatscreen with digital channels already built in.