Hi, yes we had it installed about 5 weeks ago but not to a hd tv. The other half thinks its great as you can record two channels at the same time while watching a third. You can record up to 80 hours on to the hard drive and transfer them to DVD/Video if you wish.
The picture quality seems a lot better than the old Pace box.
There are still a few bugs which are being sorted out gradually by Telewest but on the whole are very happy with it.
Hope that helps.