Please be gentle with me, I'm new to universal remotes. For my needs, I'm happy at the moment with the one for all 6 in 1 controller. I've an LCD TV, Cambridge amp, Sky+ box, and a Yamaha DVD player. At the touch of a button I switch on the TV, sky+ and the amp. I can do everything I want. Then, at the touch of another button I can switch on the DVD, change the input source on the TV, change the amp setting to DVD, switch off sky+. Later I can switch it back with another button, or shut it all down. Now, I REALLY like the look of the new Harmony 525 and I hear a lot of good things about logitech, so I've been planning on purchasing one of those, but what do these more expensive controllers offer, in terms of practicality, that the £20 controller I have now doesn't?