Hi, did not carry out a detailed comparison, but it's better than the scart composite, and probably the same as component on my 19in kitchen TV.
The main reason I did this was so I could hook up a spare box to my PC monitor spare VGA port, mainly to play music when I'm at the PC. Though if I had known about it earlier I would have bought a monitor for the kitchen rather than a TV, since we no longer watch live broadcasts (and to keep the licencing people off my back!).