Just had that upgraded to the S-video version. But ...
I cannot see any improvement in image quality whatsoever - still get jpeg type interference pattern around text etc.
New STB has 1x composite out + 1x S-video, instead of 2x composite out on the back of the original STB. Otherwise the units look identical.
Very easy to switch between S-video and composite, and I see no difference. Even got the tech to put the old one back to check - still no difference.
Is this smoke & mirrors trickery to appease complaints by providing an "S-video" STB .. ie. possible that they are internally the same but with the second composite out connected to an S-video socket?
To compound things the tech then forgot to reload the forward program data - will have to get that sorted tech support tomorrow.