Gerrardasnails: I disagree strongly. The hdmi connection from HD box to tv compared to scart to tv with Sky + is a big improvement. SD channels from a Sky HD box is clearly better than from a standard box.
Im not impressed at all by the quality of SD material using a hd connection and from memory (pre hdmi) the quality was not that great either, but I stand corrected as I have not done a recent comparison. If there is an improvement to be had is it worth the outlay of a HD box? I can imagine what the sales team at sky would say if you asked to buy a HD box but not take out the HD package.....
What are they selling for nowadays?