Bought a Logitech Harmony H655 remote control new on e-bay, says it can operate 12 units and got 5 stars in what hi-fi. It won't work with Pace digital boxes, that rules out NTL, Telewest and most of Sky. What's the point of a multiple remote that can't change the tele channel? Why does it warrant 5 stars when it's useless? Anybody else got experience of this?