I must admit I liked my H & M until it blew up one of my DCC decoders running in DC mode (I was using it to check out the loco). When I opened it up I was amazed it wasn't in a museum, there were components that I hadn't seen since during my O levels, that is how old they are. Eventually I will take the insides out and replace them with a modern type controller, the box is ok, as are the transformers although I do worry about the earthing seeing as it is a metal box (please don't tell me how to earth it, I know exactly how to). I now use the controller I got with the Pendulino set and yes it is PWM, so the locos buzz a bit, but it so far seems to power all my locos even my old Wrenns, so not such a bad design by Hornby. Sure it trips out occasionally but as I am normally just checking out a loco then no big issue. Sometimes it takes a while to get an an old X04 based loco to go, but generally it gets there.