I've 2 perfectly good analogue TVs which I see no point in ditching in
favour of some digital TV. The impetus for me, to get a free to air digibox,
was a TV channel was going to do a long feature on a recent artist Constable
exhibition. That low power channel , locally, on analogue is just snow with
a hint of colour.
The digitally decoded version of that channel, at first sight, was full
colour and no snow. But viewing closeups of Constable's work in that
programme and of course all the other digital channels the same shortcomings
in the coding/decoding of the video info. In artistic terms I belive its
called "local colour" , in effect, a restricted palette range of colour.
Instead of a myriad of green hues you could expect from the analogue system
there was such limiting of range that it makes watching anything other than
cartoons very noticeably degraded.

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Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/