I have a dm500s (they are all clones) no hd but it drives my motor and 1.1 mtr dish fine. I got the dish and motor from wizardsat £129 that included cable, wallmount and a meter. The dm500s is an eagle clone cost me £44 from the classifieds on here.
I wouldn't touch a clone dm800 as dd says most are rubbish and need extra's to work.
If you go motorised then I wouldn't bother with a vu as whats the point of a dual tuner, your wife sets a recording and the dish moves half way through something your watching, I can't think of anything more annoying.