Personally I would recomend going for the HD box over the standard or Sky+ box as IMHO the picture is much better eve with SD content due mainly IMHO to the digital HDMI conection ove that of a scart one.
It is possible to have the HD box without paying the extra £10 a month for the extra HD channels if You dont really want them but You will still ge some Hd for free in BBC HD, C4 HD and I think LUX HD is also free.
Can't be of any help one the phone side of things as am with Talk-Talk but would sugest calling both Sky and BT to see what they say.
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