BT Ultra HD YouView box

The BT Ultra HD YouView has now been around for a number of years, piping out 4K UHD broadcasts to anyone with the kit and money to be able to watch them.More technically known as the Humax DTR-T4000, it certainly lives up to the hype surrounding UHD. With compatible systems now on the market from the likes of Sky and Virgin Media though, does the BT option still hold up?The Humax DTR-T4000 is a YouView+ box, virtually identical in appearance and functionality to the YouView from BT box, except